When the canvas becomes a score: The secret art of painting music

This alchemy between sound and colour is nothing new. Since the dawn of creation, humans have sought to translate the invisible into the visible, the fleeting into the enduring. But it was at the turn of the twentieth century that this quest took on a near-mystical dimension. In the smoke-filled salons of Munich, the bohemian studios of Paris, or the theosophical circles of Stockholm, artists explored a new frontier: what if painting could not only represent the world, but also sing it? What if every brushstroke were a note, every colour a chord, every composition a silent symphony?

01The eye that hears: when sounds take shape

Synesthesia—that neurological phenomenon where the senses blur—is not an invention of artists. Some experience it naturally: for them, numbers have colours, words have tastes, or, like the composer Olivier Messiaen, chords have precise hues. But what fascinates about synesthetic painters is their ability to artificially recreate this experience for the viewer.

Take František Kupka, that eccentric Czech who frequented Parisian occult circles. In his studio in Puteaux, he often worked with a phonograph playing Beethoven quartets. His canvases from the Amorpha series resemble sound waves frozen in paint. The undulating forms, the gradations of blue and red—everything evokes less an image than a vibration. Kupka claimed to paint "the soul of sounds," and his contemporaries compared him to an alchemist transmuting notes into light.

This approach is no mere metaphor. Recent neuroscience studies show that our brains process abstract shapes and music in strikingly similar ways. When you look at a Kandinsky, your visual cortex activates, but so do the regions normally reserved for hearing. It is this sensory confusion that gives these works their hypnotic power—as if the painting were whispering a melody you cannot hear, but feel in your very bones.

02The secret language of colours

If music can inspire forms, it also deeply influences painters’ palettes. Kandinsky theorised this connection in Concerning the Spiritual in Art, establishing precise correspondences between colours and instruments:

Yellow, bright and shrill, evokes the sound of trumpets, Deep blue resonates like a cello, Red, powerful and aggressive, recalls brass et Green, calm and balanced, sings like a violin.

These associations are not arbitrary. They draw on centuries of symbolism and scientific experiments. Goethe, in his Theory of Colours, had already noted that certain hues provoked emotions akin to musical chords. But it was in the twentieth century that this idea took on a near-scientific dimension.

Paul Klee, who was also a violinist, pushed the logic further. For him, each colour had not only a sound, but also a movement. In his watercolours, the forms seem to dance according to a musical choreography. His Fugues in particular visually reproduce the complex structure of these Baroque compositions, with motifs that echo and intertwine like the voices of a choir.

This systematic approach may seem rigid, but it actually opens up infinite possibilities. By deliberately associating colours and sounds, painters create a new visual grammar, a universal language that speaks directly to the unconscious.

03The studio as concert hall

To understand how these artists worked, you must imagine their studios as laboratories where painting, music, and even spiritualism mingled. Kandinsky hosted evenings where people listened to Wagner while contemplating his canvases. Klee played the violin for his Bauhaus students, asking them to translate melodies into drawings.

These collective experiments gave rise to unique techniques. Some painters worked with sheet music before them, literally transposing notes into shapes and colours. Others, like Hilma af Klint, painted in a trance, letting their hands be guided by "higher entities" dictating the compositions.

One of the most fascinating methods is that of "musical automatic drawing." The artist listens to a piece with their eyes closed, then lets their pencil follow the rhythm, the dynamics, the emotions stirred by the music. The results often resemble graphic scores, where thick strokes correspond to fortissimo and thin lines to pianissimo.

This intuitive approach contrasts with the mathematical rigour of some composers. But it is precisely this tension between control and surrender that gives these works their expressive power. As in music, the magic is born in the balance between structure and improvisation.

04The fugue in red: when Bach inspires Picasso

Among the most emblematic works of this period, Paul Klee’s Fugue in Red holds a special place. Painted in 1921, this small watercolour (30 x 23 cm) is a true visual score. Klee transposes the principles of the Baroque fugue—main theme, counter-subject, development—into a geometric composition where red forms seem to dance on the paper.

What strikes in this work is its almost mathematical precision. Each element occupies a precise place, like notes on a staff. The red squares and rectangles represent the different voices of the fugue, while the white spaces between them evoke silences. Klee even included small numbers in the corners, like a signature or a tempo marking.

This systematic approach may seem cold, but it reveals a deep understanding of music. Klee does not merely paint what he hears—he translates the very structure of the composition, its invisible architecture. The result is both a work of art and a score, an object that can be both seen and "read" like a musical piece.

This fusion of disciplines foreshadows future experiments, from the Bauhaus to contemporary multimedia installations. It shows that a painting can be far more than an image—a complete sensory experience, a bridge between the arts.

05The silence that speaks: when the absence of sound becomes colour

If some works seek to translate music into images, others explore the opposite idea: how to represent silence? This paradoxical question fascinated synesthetic artists, who saw in the absence of sound a near-physical presence.

Kandinsky devoted several canvases to this idea, particularly his Compositions, where the empty spaces between forms are as important as the visible elements. In Composition VII, the black background is not merely a support, but a true sonic material—the silence that envelops and gives relief to the other colours.

This approach finds a particular echo in contemporary music. John Cage, with his piece 4’33", showed that silence is never absolute—it is filled with ambient sounds, the audience’s breaths, the rustling of clothes. In the same way, synesthetic paintings capture this invisible presence, this tension between what is shown and what is suggested.

Hilma af Klint took this logic even further. Her works, often symmetrical and organised around an empty centre, evoke mandalas or cosmic diagrams. For her, silence was not an absence, but a plenitude—the space where the visible and invisible, the material and the spiritual, meet.

This exploration of silence as an artistic raw material opens fascinating perspectives. It shows that synesthesia is not limited to translating one sense into another, but can reveal hidden dimensions of perception.

06The invisible legacy: when music continues to paint

The influence of these pioneers extends far beyond artistic circles. Today, designers, architects, and even chefs use these principles to create multisensory experiences. Michelin-starred restaurants design their menus like scores, where each dish is a "note" in a culinary composition. Perfumers speak of "olfactory notes" that harmonise like musical chords.

In the digital realm, music visualisation software creates animations that react in real time to sound. Artists like Ryoji Ikeda transform data into visual soundscapes, while installations like Chris Milk’s The Treachery of Sanctuary use body movement to generate abstract compositions.

This democratisation of synesthesia raises a fascinating question: what if we were all, to varying degrees, synesthetes? Neuroscience suggests that our brains are naturally inclined to make connections between the senses. Perhaps these artists merely revealed a capacity we all possess, but that modern society tends to stifle.

07The brush as bow: how to create in synesthesia today

For those who wish to explore this path, the masters’ techniques remain surprisingly relevant. Here are a few ways to turn your studio into a concert hall:

Start by listening. Not as background noise, but truly listening. Choose a piece of music that moves you—a Chopin sonata, a Bartók quartet, or even an improvised jazz piece. Close your eyes and let the sounds evoke images, colours, textures. Note these impressions, even if they seem disjointed.

Then, work with constraints. As in music, rules stimulate creativity. Try translating a musical structure into painting: a fugue in geometric shapes, a concerto in colour contrasts, a symphony in brushstrokes. Kandinsky recommended starting with simple exercises: paint a chromatic scale, associating each colour with a note.

Don’t fear chance. Synesthetic painters often worked in a semi-trance, letting their hands be guided by the music. Try painting with your eyes closed, or with your non-dominant hand. You may be surprised by the results.

Finally, think about space. Music is a temporal experience, but painting is spatial. How to suggest movement, duration, rhythm in a static image? Synesthetic artists used techniques like motif repetition, colour gradients, or spiral compositions to evoke this temporal dimension.

08Art as a bridge between worlds

At its core, what these artists explored was far more than a simple correspondence between sounds and colours. They sought to create a universal language, capable of speaking directly to the soul without words. In an increasingly fragmented world, where each sense is bombarded with contradictory information, this quest for unity resonates with particular urgency.

Perhaps true synesthesia is not a neurological anomaly, but a fundamental aspiration of the human spirit. We all seek, consciously or not, to reconcile our senses, to find harmony between what we see, hear, touch, and feel. The painters who dared to listen to colours and see sounds remind us that art, at its highest level, is a total experience—a symphony where all our senses are invited to dance.

The next time you contemplate an abstract painting, close your eyes for a moment and listen. Perhaps you will hear, like a distant echo, the melody the artist tried to capture. And if you listen closely, you may discover that this music has always been within you.