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Tom Gurney BSc (Hons) is an art history expert with over 20 years experience
Published on June 19, 2020 / Updated on September 27, 2026
Email: tomgurney1@gmail.com / Phone: +44 7429 011000

A grid of colour relations

Paul Klee’s New Harmony looks orderly at first. Its tall canvas is divided into rows of coloured rectangles, most separated by narrow dark joins. Then the order starts to shift. Colours return in different places; some blocks seem related across the centre, while others interrupt the expected pattern. The painting asks what a harmony can be when its parts do not settle into an obvious, evenly repeated design. Klee painted it in 1936, and the Solomon R. Guggenheim Museum holds it as 71.1960.[1]

The Guggenheim's current record gives the original German title Neue Harmonie, identifies the medium as oil on canvas, and measures it 93.7 × 66.4 cm. Its 1984 handbook printed 93.6 × 66.3 cm. Those small differences arise from the way the same imperial dimensions were converted and rounded; they do not identify two paintings. The work is 1936,24 in Klee's annual numbering. It is one canvas, not a vague group of “New Harmony paintings.”[1][2][3]

Contents

  1. What is the exact painting?
  2. What holds the grid together?
  3. Is the other half an upside-down reflection?
  4. Where does it sit among Klee's colour squares?
  5. Can twelve colours make a twelve-tone composition?
  6. What does 1936 add to the reading?
  7. Why is the existing image retained?
  8. Looking again

What is the exact painting?

The Guggenheim's current collection page supplies the title, year, oil medium, measurements and accession. The 1984 Guggenheim handbook adds Klee's annual number 1936,24 and records a signature, “Klee,” at upper right. It says the face of the painting is undated. These details belong to an object record, and their precision matters: Alter Klang / Ancient Harmony in Basel is a different work, 1925,236, on cardboard rather than canvas.[1][2][4]

The older handbook's measurements are often repeated as 93.6 × 66.3 cm. The museum currently gives 36⅞ × 26⅛ inches, rounded metrically to 93.7 × 66.4 cm. The difference is roughly a millimetre each way, not a change in the painting's format. We use the current owner measurements in the caption and retain the historical figures when discussing the 1984 source. The German dissertation by Marianne Keller Tschirren gives approximately 93 × 66 cm, a rounded scholarly caption rather than a third competing measurement.[1][2][3]

The canvas has a documented route through collections, although the detailed chain on the public record here comes from a historical museum handbook, not a newly audited transaction file. That 1984 entry places it with Daniel-Henry Kahnweiler in Paris (1937–39), then Nierendorf Gallery in New York (1939–44), and Benjamin Baldwin in New York by 1949 until a 1971 auction. It then names Heinz Berggruen and Galerie Beyeler during 1971, before Guggenheim accession. The entry is a strong research lead and evidence of the painting's international circulation; precise transfer dates and the auction lot should be checked against the museum's current provenance file and the sale catalogue before the chain is treated as closed.[2]

The same handbook lists early exhibitions in Paris in 1938, Amsterdam and London in 1938, and a travelling American presentation of “banned” German art beginning in 1939. Those appearances show that the picture circulated while Klee was alive and before it reached the Guggenheim. It is misleading to imagine that it appeared only when the museum took its title for its 2013 exhibition New Harmony: Abstraction between the Wars, 1919–1939. The 2013 show is a later framing of the picture, not its original occasion.[2][10]

What holds the grid together?

Look first at the outer contour. The work is much taller than it is wide. Within that upright field, roughly horizontal and vertical divisions make a matrix of compartments. They are close to squares in some places and longer rectangles in others. A dark ground or dark joins keep the parts distinct without making the structure mechanically uniform. The format encourages the eye to travel down the rows, but repeated colours also pull it across and back up.[1][8]

The existing site image, a small poster reproduction with a broad white border, shows a vivid red near the upper middle and another lower down. Blues appear in several separated fields. Ochres and oranges recur, and muted greens and browns make the brighter blocks seem brighter by comparison. The darkest portions are not simply an empty backdrop: they help determine the apparent strength of adjacent colour. This is a close reading of a limited reproduction, not an exact pigment map or a conservation finding.[1][8]

Notice that a patch can be both itself and a member of a relation. A red block gains force beside deep green or blue; a paler brown may appear to recede beside a saturated orange. Small shifts in edge, hue and value prevent the matrix from becoming a printed checkerboard. It is possible to follow one colour family as if it were a recurring motif, but the recurrence is modified each time. That is why the title is more interesting as a question about relationships than as a declaration that all the blocks are alike.[1][8]

The word grid is useful, but it should not make the canvas sound like a numerical puzzle. The Guggenheim's earlier handbook places it among Klee's so-called “magic square” paintings. In this context the phrase names an art-historical family of gridded colour works. The museum does not give numbers whose rows and columns add to a common sum. Square-like forms are the visible units; their colour interactions are the subject of the analysis.[2][5]

Is the other half an upside-down reflection?

Nancy Spector's Guggenheim collection essay attributes an inverted bilateral symmetry reading to art historian Andrew Kagan. In her summary, the right half is an upside-down reflection of the left. The museum's 1984 handbook had already described the coloured fields as arranged by inverted bilateral symmetry. Keller Tschirren's German study likewise finds a central mirroring principle in this 1936 painting, connecting it to the 1927 Harmonie der nördlichen Flora.[1][2][3]

That does not require every printed patch to be a flawless duplicate of a counterpart. The grid can be read by testing correspondences: pick one colour, look across the centre and down to the opposite portion, then see where a comparable field appears. Some relations are clearer than others, especially in a small, colour-shifted poster. Describing the principle is safer than announcing an audited square-by-square map that this reproduction cannot support.[1][3][8]

Music historian Simon Shaw-Miller complicates the view productively. He accepts Kagan's bilateral inversion, but also suggests treating the canvas as four quarters: the lower right can answer the upper left in a reverse-and-inverted order, while the lower left answers the upper right. That is an account of how the viewer can traverse the painting, not a claim that Klee left a written set of instructions on it. Shaw-Miller's close comparison was published in a specialist book, and his terminology comes from musical transformations; the visible relationships remain open to testing against a high-fidelity image and the original.[5]

The dark underpainting matters in these comparisons. The 1984 handbook contrasts this later canvas's brighter fields over dark underpainting with the softer, smaller Ancient Harmony. Keller Tschirren describes how mixed or “broken” tones and a dark ground affect other square pictures. A colour repeated in two places need not look identical if its neighbours and ground differ. Exact pigment names, layer order and technical condition should await an owner examination rather than be inferred from the poster.[2][3][8]

Where does it sit among Klee's colour squares?

Klee did not invent the rectangle picture in the year of this painting. The Guggenheim traces flat coloured configurations in his art back to the 1910s; its 1984 handbook points to a developed series from 1923. Keller Tschirren supplies a more discriminating sequence across the following decade. In Ein Klang der nördlichen Flora (1924,74), she finds colour fields that recur diagonally. In Harmonie der nördlichen Flora (1927,144), related fields appear more centrally mirrored and the layout is more static, although subtle tonal variation makes some pairings difficult. Neue Harmonie takes up a comparable central-reflection principle in 1936.[1][2][3]

This is continuity of a visual problem, not a claim that the three pictures are the same design enlarged and recoloured. The 1924 sheet uses different materials and a broad horizontal format, while the 1927 work and the Guggenheim canvas have their own dimensions and supports. Keller Tschirren also discusses a 1930 colour-panel picture between these examples. Klee retained an interest in orthogonal arrangement after leaving teaching; he could return to it without copying a classroom exercise.[3]

Ancient Harmony offers a valuable comparison because the titles almost invite conflation. Basel records Alter Klang as 1925,236 (X 6), oil on cardboard nailed to a frame, about 38.3 × 38 cm. Its near-square, intimate support differs markedly from the tall 1936 canvas. The 1984 Guggenheim handbook calls the two related, then distinguishes the later work's brighter colour over dark underpainting and stricter grid. They can illuminate one another without making Ancient Harmony a preparatory study for New Harmony.[2][4]

Keller Tschirren's larger caution is essential. Her reading of Klee's German teaching documents argues that pictures and lessons can share a principle while a painting is not a one-to-one execution of theory. A gridded image can be both ordered and creatively irregular. This helps explain why a rough correspondence between fields need not be a failed theorem. Klee made an artwork, not a classroom diagram drawn to satisfy a fixed grid rule.[3]

Can twelve colours make a twelve-tone composition?

Klee was a trained and active musician, and his title encourages aural language. The Guggenheim collection essay presents Kagan's interpretation: twelve hues apart from neutral grey and black, with juxtaposed noncomplementary colours and inverted symmetry evoking Arnold Schönberg's twelve-tone music. A Spanish educational guide from Fundación Juan March repeats a twelve-colour and bilateral-inversion analogy. These are meaningful art-historical and teaching readings. Neither source publishes a work-specific statement by Klee saying that he assigned particular pitches to particular squares of this canvas.[1][6]

The difference between analogy and score matters. Schönberg's serial technique orders twelve pitch classes and transforms a chosen series. A painted field can show repetition, reflection and inversion, but it does not supply an audible sequence, rhythm or pitch designation simply by containing colours. There are visibly many more compartments than twelve. The count of twelve hues depends on decisions about mixed tones, darkened variants, grey and reproduction colour. Kagan's count is his analytical claim, transmitted by the museum; it is not something the small product image can independently prove.[1][5][6][8]

Shaw-Miller reads the coloured relations as potentially dissonant rather than as a row of twelve literal tones. He points to green and red-yellow mixtures, and sees multiple ways to describe the order: inversion, reverse ordering, and their combinations. He also notes that such structural devices exist in earlier counterpoint as well as in twentieth-century serial music. His argument widens the musical analogy: an image can make a viewer experience related positions and changes without encoding one composer. It does not settle whether Klee consciously modelled this particular work on Schönberg.[5]

A Portuguese study by R. M. S. Silva cites Kagan while analysing Leo Brouwer's guitar sonata and its relationship to Klee's “magic squares.” That is valuable evidence of the painting's later life in musical scholarship. It is not a second independent analysis of the canvas's paint. The article's figure caption gives 86 × 60 cm, inconsistent with the owner's dimensions; this page follows the Guggenheim instead. The difference shows why an object caption and a scholar's interpretive use of an image need separate checks.[1][7]

We can therefore listen metaphorically while looking precisely. Follow a blue field into its recurrence; see whether the relation is a mirror, a reversal or simply an echo. Let red-green contrast feel uneasy if it does. The painting makes formal comparisons possible. Whether one hears Schönberg, earlier counterpoint or no music at all, the canvas remains a visual arrangement with its own material, scale and colour.[1][5][8]

What does 1936 add to the reading?

Klee and Lily had returned to Bern after his removal from teaching in Düsseldorf in 1933. He became seriously ill in 1935, and the Zentrum Paul Klee records 25 works in 1936, a sharp reduction in the annual register. The 1984 Guggenheim handbook also connects this canvas with illness and reduced production. The date is historically important: a relatively large, carefully organised oil canvas was made amid changed physical and political circumstances.[2][9]

The circumstances cannot diagnose the grid. No cited object record establishes that a particular red square expresses a symptom or that the strict arrangement was a therapeutic attempt at control. Nor was this one of Klee's very last works. He continued to make art through 1940, and his 1939 register contains far more entries. The museum's description of New Harmony as the last such composition concerns its line of flat gridded canvases, not the end of Klee's creative life. The older site's “among his last compositions” phrasing blurred that distinction.[1][9]

The picture also had a public history in those years. The 1984 exhibition list places it in 1938 European shows and in an American travelling presentation of banned German art beginning in 1939. This does not prove the painting itself was created as a direct protest image. It does show that a work made in Bern could move across borders and acquire new contexts while the political conditions around its maker grew harsher.[2]

Why is the existing image retained?

The small poster image includes a white product surround and does not provide a close view of the oil surface. Its broad arrangement can be read, but paint texture cannot be judged from it.[1][8]

Looking again

Start with one strong red and search for its counterpart. Then follow a blue through several separated blocks. Check whether the central division acts like a mirror or whether a reverse ordering better describes what you see. The dark joins hold these questions together without forcing one answer. Klee's painting is structured enough to invite comparison and varied enough to resist the first simple rule.[1][3][5][8]

Neue Harmonie is the 1936,24 Guggenheim canvas, oil on canvas, 93.7 × 66.4 cm in the current owner record. The museum and scholars agree that mirrored colour relations matter; they differ in how much musical theory those relations can bear. Its 1920s predecessors, its 1936 circumstances, and its later musical reception each illuminate part of the work. None replaces the experience of examining its coloured fields. See Ancient Harmony, Klee and music, colour theory and late work for the separate threads.[1][2][3][4][5]

Explore selected works from Klee’s much larger oeuvre. Titles without a link have an authenticated catalogue identity but no reviewed article yet.

Artworks directory

217 artworks

NameDateMedium
A Gate1939Painting and mixed media
A Woman for Gods1938Watercolour and mixed media
Ab Ovo1917Watercolour and mixed media
Above Mountain Summit1917Drawing and mixed media
Abstract Trio1923Drawing and mixed media
Acrobats1915Watercolour and mixed media
Actor's Mask1924Painting and mixed media
Ad Marginem1930Drawing and mixed media
Ad Parnassum1932Painting and mixed media
Adventurer Ship1927Drawing and mixed media
Affected Place1922Drawing and mixed media
After a Sketch from Zurich1914Watercolour and mixed media
After Drawing1919Print
After The Floods1936Watercolour and mixed media
All Souls' Picture1921Print
Ancient Harmony1925Painting and mixed media
Angel Applicant1939Drawing and mixed media
Angel Serves the Desired1920Print
Angel, Still Female1939Painting and mixed media
Angelus Novus1920Drawing and mixed media
Animal Terror1926Painting and mixed media
Arab Song1932Painting and mixed media
Archangel1938Painting and mixed media
Architecture1923Painting and mixed media
Architecture of the Plain1923Drawing and mixed media
Around the Fish1926Painting and mixed media
Arrival of the Air Steamer1921Drawing and mixed media
Asiatic God1924Painting and mixed media
Astrological Fantasy Portrait1924Drawing and mixed media
Athlete's Head1932Watercolour and mixed media
Aufgehender Stern1931Painting and mixed media
Autumn Flower1922Painting and mixed media
Bad Band1920Drawing and mixed media
Baroque Centaur1939Painting and mixed media
Before the Blitz1923Drawing and mixed media
Before the Snow1929Drawing and mixed media
Besessenes Madchen1924Watercolour and mixed media
Bird Garden1924Print
Bird Wandering Off1926Watercolour and mixed media
Blossoms in the Night1930Watercolour and mixed media
Blue-Bird-Pumpkin1939Painting and mixed media
Boats in the Flood1937Painting and mixed media
Botanical Theatre1934Drawing and mixed media
Boy in Fancy Dress1931Watercolour and mixed media
Broken Key1938Print
Brother and Sister1930Watercolour and mixed media
But the Red Roof1935Painting and mixed media
C - C = Fisch1931Watercolour and mixed media
Cacti1912Painting and mixed media
Camel (in Rhythmic Landscape with Trees)1920Drawing and mixed media
Captive Pierrot1923Drawing and mixed media
Castle and Sun1928Drawing and mixed media
Cat and Bird1928Drawing and mixed media
Cathedrals1925Watercolour and mixed media
Chalice of the Heart1937Painting and mixed media
Characters in Yellow1937Painting and mixed media
Chosen Site1927Mixed media
Christmas Picture1923Drawing and mixed media
City of Towers1916Painting and mixed media
Clarification1932Painting and mixed media
Collection of Figurines1926Painting and mixed media
Colorful Architecture1917Painting and mixed media
Comedians' Handbill1938Print
Comic Opera Singer1927Painting and mixed media
Composition1939Painting and mixed media
Composition with Figures1915Drawing and mixed media
Composition with the Yellow Half-Moon and the Y1918Watercolour and mixed media
Conch–Still Life II1939Watercolour and mixed media
Cosmic Composition1919Painting and mixed media
Crystal Gradation1921Drawing and mixed media
Dance of the Grieving Child1922Painting and mixed media
Dancing Girl1940Painting and mixed media
Das Licht und Etliches1931Mixed media
Death and Fire1940Painting and mixed media
Death for the Idea1915Print
Demon as Pirate1926Watercolour and mixed media
Diana1931Painting and mixed media
Diavolo Player1923Drawing and mixed media
Die Kapelle1917Watercolour and mixed media
Die Vase1938Painting and mixed media
Doctor1930Drawing and mixed media
Dredger and Sailboat1931Watercolour and mixed media
Ein Tor1939Painting and mixed media
Ein Weib fur Gotter1938Mixed media
Embrace1939Watercolour and mixed media
Episode before an Arab Town1923Print
Equals Infinity1932Painting and mixed media
Eros1923Drawing and mixed media
Error on Green1930Watercolour and mixed media
Evening Figure1935Drawing and mixed media
Falling Bird1919Print
Fermata1932Watercolour and mixed media
Fire Clown1921Watercolour and mixed media
Fire Full Moon1933Watercolour and mixed media
Fire in the Evening1929Painting and mixed media
Fish in the Harbour1916Watercolour and mixed media
Fish Magic1925Watercolour and mixed media
Flock of Birds1917Drawing and mixed media
Flora on Sand1927Watercolour and mixed media
Flower Myth1918Print
Flower Stand with Watering Can and Bucket1910Watercolour and mixed media
Flowering Tree (Abstraction with Reference to a Flowering Tree)1925Painting and mixed media
Flowers in Pots1923Print
Flowers in Stone1939Painting and mixed media
Forest Witch1938Painting and mixed media
Fright of a Girl1922Drawing and mixed media
Fruits on Red1930Drawing and mixed media
Full Moon1919Mixed media
Föhn Wind in Franz Marc's Garden1915Watercolour and mixed media
Garden in St Germain, The European Quarter near Tunis1914Watercolour and mixed media
Ghost Chamber with the Tall Door (New Version)1925Print
Ghost of a Genius1922Drawing and mixed media
Girl in Mourning1939Painting and mixed media
Glance of a Landscape1926Watercolour and mixed media
Gluht Nach1939Drawing and mixed media
Golden Fish1925Watercolour and mixed media
Goldfish Wife1921Watercolour and mixed media
Green Plant, Blood, Louse1924Drawing and mixed media
Hafenbild1918Mixed media
Hammamet with Mosque1914Watercolour and mixed media
Harbour with Sailing Ships1937Painting and mixed media
Hauptweg und Nebenwege1929Painting and mixed media
Heavenly and Earthly Time1927Drawing and mixed media
Heroic Fiddling1938Painting and mixed media
Heroic Roses1938Painting and mixed media
Heroic Strokes of the Bow—Mixed media
Highway and Byways1929Drawing and mixed media
Houses near the Gravel Pit1913Watercolour and mixed media
Howling Dog1928Painting and mixed media
In the Current Six Thresholds1929Painting and mixed media
In the Style of Kairouan1914Drawing and mixed media
Individualized Altimetry of Stripes1930Painting and mixed media
Insula Dulcamara1938Print
Interior with the Clock1913Watercolour and mixed media
Irma Rossa the Animal Tamer1918Drawing and mixed media
Journey in Corsica1927Drawing and mixed media
Landscape with Bluebirds1919Watercolour and mixed media
Legend of the Nile1937Painting and mixed media
Lemon Harvest1937Watercolour and mixed media
Likeness in the Bower1930Watercolour and mixed media
Limits of Reason1927Painting and mixed media
Little Hope1938Watercolour and mixed media
Magdalena before the Conversion1938Drawing and mixed media
Mask of Fear1932Painting and mixed media
May Picture1925Painting and mixed media
Monument in a Cemetery1922Watercolour and mixed media
Monuments at G1929Watercolour and mixed media
Municipal Jewel1917Watercolour and mixed media
Mural from the Temple of Longing Thither1922Print
Nach der Uberschwemmung1936Watercolour and mixed media
New Harmony1936Painting and mixed media
New House in the Suburbs—Mixed media
Old Steamboat1922Drawing and mixed media
On the Edge1930Drawing and mixed media
Once Emerged from the Gray of Night1918Drawing and mixed media
One Who Understands1934Painting and mixed media
Oriental Pleasure Garden1925Painting and mixed media
Park of Idols1939Watercolour and mixed media
Passing by Red Pillars1928Watercolour and mixed media
Persian Nightingales1917Drawing and mixed media
Popular Wall Painting1922Painting and mixed media
Prestidigitator1927Watercolour and mixed media
Rainy Day1931Watercolour and mixed media
Red and White Domes1914Watercolour and mixed media
Red Balloon1922Drawing and mixed media
Redgreen and Violet-Yellow Rhythms1920Drawing and mixed media
Refuge1930Watercolour and mixed media
Rhythmic Rythmical1930Painting and mixed media
Saint of the Inner Light1921Print
Scaffolding of a New Building1930Painting and mixed media
Scholar in Dealing with Stars1926Watercolour and mixed media
Seated Woman1930Drawing and mixed media
Senecio1922Painting and mixed media
Separation in the Evening1922Drawing and mixed media
Sinbad the Sailor1923Drawing and mixed media
Skeptically Smiling—Mixed media
Small House in the Garden City1928Watercolour and mixed media
Small Portrait of a Girl in Yellow1925Painting and mixed media
Southern Gardens1919Watercolour and mixed media
Static-Dynamic Gradation1923Drawing and mixed media
Still Life1927Painting and mixed media
Still Life with Gladioli1932Watercolour and mixed media
Strange Garden1923Drawing and mixed media
Stricken City1936Painting and mixed media
Strong Dream1929Watercolour and mixed media
Struck from the List1933Drawing and mixed media
Structural I1924Drawing and mixed media
Sumpflegende1919Painting and mixed media
Temple Gardens1920Drawing and mixed media
The Arrow before the Target1921Drawing and mixed media
The Barbed Noose with the Mice1923Watercolour and mixed media
The Flora of the Heath1925Watercolour and mixed media
The Goldfish1925Watercolour and mixed media
The Hour Before One Night1940Painting and mixed media
The Man in Love1923Print
The Mask with the Flag1925Mixed media
The Pathos of Fertility1921Print
The Rhine at Duisburg1937Painting and mixed media
The Way to the Citadel1937Painting and mixed media
Three Houses and a Bridge1922Watercolour and mixed media
Tightrope Walker1923Print
Tomb in Three Parts1923Watercolour and mixed media
Tomcat's Turf1919Watercolour and mixed media
Tower in Orange and Green1922Drawing and mixed media
Tree and Architecture - Rhythms I1920Watercolour and mixed media
Tree and Architecture - Rhythms II1920Painting and mixed media
Tropical Dawn with the Owl1921Mixed media
Tropische Dammerung1921Painting and mixed media
Twittering Machine1922Drawing and mixed media
Variations (Progressive Motif)1927Watercolour and mixed media
Ventriloquist and Crier in the Moor1923Print
Viaducts Break Ranks1937Drawing and mixed media
Villa R1919Painting and mixed media
Village Carnival1926Painting and mixed media
Vor dem Blitz1923Drawing and mixed media
Wald-Hexen1938Painting and mixed media
Young Forest1925Drawing and mixed media

Discussion

Klee arranges coloured rectangles in a tall, dark grid.

Symmetry and musical analogy invite different ways of reading it.

Reader Insights

Close Looking

Which colour do you follow first across the grid?

Context

Where do you see repetition, inversion or a changed counterpart?

Open Question

What can the small reproduction show, and what requires the original?

Join the Conversation

Share the detail or source behind your reading.

References

  1. Solomon R. Guggenheim Museum, New Harmony (Neue Harmonie), accession 71.1960, current object record and Nancy Spector's collection essay: title, 1936 date, oil on canvas, 36⅞ × 26⅛ in / 93.7 × 66.4 cm, Kagan's attributed symmetry and twelve-hue reading, and ARS/VG Bild-Kunst notice, View source.
  2. Vivian Endicott Barnett, Handbook, The Guggenheim Museum Collection 1900–1980 (Solomon R. Guggenheim Foundation, 1984), entry 82, pp. 181–83, edition record and digitised text access. The entry was read in digitised text with OCR noise: 1936,24, signature, older dimensions, historical provenance and exhibitions; original print and transactions still warrant verification, View source.
  3. Marianne Keller Tschirren, Dreieck, Kreis, Kugel dissertation, German National Library PDF, pp. 153–56: the 1924/1927 square pictures, central mirroring in Neue Harmonie, mixed tones, dark grounds, and the nonliteral relation of teaching to painting, View source.
  4. Kunstmuseum Basel, accession list for Alter Klang, G 1960.25, and Spanish state loan record transcribing its Basel object data: distinct 1925,236 work, medium and scale.
  5. Simon Shaw-Miller, Visible Deeds of Music: Art and Music from Wagner to Cage (Yale University Press, 2002), chapter 4, pp. 153–58, publisher edition record. Text directly checked in a digitised copy; the four-quarter/retrograde proposal and caveat about earlier counterpoint are his interpretation. His incidental 1927 date for Basel's Alter Klang conflicts with the owner's 1925 record and is not adopted here, View source.
  6. Fundación Juan March, “Paul Klee, el pintor violinista,” teaching guide, Spanish, 2013–14, section on Schönberg: institutional educational analogy of twelve colour tones and inverted bilateral symmetry, View source.
  7. R. M. S. Silva, “Ekphrasis em música: os Quadrados Mágicos de Paul Klee na Sonata para violão solo de Leo Brouwer,” Per Musi 19 (2009), Portuguese, p. 56: Kagan received in music analysis; conflicting figure measurement is not used as object data, View source.
  8. Existing local poster splash, visually inspected. Small retail reproduction with white surround; usable only for broad composition, not pigment analysis, faithful hue counting or new detail derivatives. The project's internal image-rights ledger records the exact-work master as unresolved.
  9. Zentrum Paul Klee, “Klee in Bern”, German exhibition research, and illness research with the University of Bern medical faculty: Bern chronology, low 1936 register total and later work.
  10. Solomon R. Guggenheim Museum, New Harmony: Abstraction between the Wars, 1919–1939, 2013 exhibition; Guggenheim's 2013 institutional filing confirms exhibition dates 10 May–8 September 2013.