Atonal music is music without a home key. In most music, one note feels like “home” and every chord either pulls toward it or away from it. Atonal music removes that pull, so every note is equally important. It can sound strange at first, but it’s built on clear techniques you can learn, hear and use yourself. Build a twelve-tone row below to try it.
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What Is Atonal Music?
Tonal music, from Bach to pop songs, is organized around a tonic: a home note and chord that everything resolves to (see how that works in Harmonic Progression vs. Regression). Atonal music avoids any tonic. No chord sounds like a resolution and no note sounds like the leading tone.
Composers such as Arnold Schoenberg, Alban Berg and Anton Webern developed atonality in Vienna in the early 1900s. Schoenberg called it “the emancipation of the dissonance”: dissonant intervals like the minor 2nd, major 7th and tritone no longer need to resolve. Today atonal sounds are everywhere, from concert music to film and horror scores and jazz.
Free Atonality vs. Twelve-Tone Music
| Free atonality | Twelve-tone (serialism) | |
|---|---|---|
| Rule | Avoid a key by ear and by choice | Use all 12 notes in a fixed order (a tone row) |
| Tools | Clusters, whole-tone and octatonic scales, quartal chords, pitch-class sets | The row and its 48 forms: Prime, Retrograde, Inversion, Retrograde-Inversion |
| Feel | Intuitive, expressive | Systematic, highly organized |
Many atonal composers think in small note groups called pitch-class sets. Explore every three-note shape in our Three-Note Pitch Classes tool.
How to Write Atonal Music, Step by Step
- Choose your 12 notes. Build a tone row using each pitch once. Using all 12 before repeating any keeps one note from becoming “home.”
- Check for hidden keys. Three notes in a row that spell a major or minor triad, or a stepwise scale run, will make the ear hear a key. The tonal-pull meter above flags these.
- Favor unstable intervals. Minor 2nds, major 7ths and tritones blur any sense of key. Avoid stacking perfect 5ths and major 3rds.
- Transform the row. Play it backwards (retrograde), upside down (inversion) or both. The 12×12 matrix shows all 48 forms.
- Shape it into music. Spread notes across octaves for wide, angular leaps, group them into chords, and give it rhythm and dynamics. The row is the raw material; the music is how you shape it.
- Avoid octave doublings and resolutions. Doubling a note or resolving a half step up to the next note sounds like a tonic arriving.
How to Read a Twelve-Tone Matrix
The first row of the matrix is your original row, called P0 (Prime). Each row below it is the same row transposed to start on a different note. Reading a row right to left gives the Retrograde (R); reading a column top to bottom gives the Inversion (I), where every interval flips direction; reading a column bottom to top gives the Retrograde-Inversion (RI). In the numbered view, 0 is your row’s first note and each number counts half steps above it.
Listening Suggestions
- Schoenberg: Pierrot Lunaire (free atonality) and the Suite for Piano, Op. 25 (twelve-tone)
- Berg: Violin Concerto, a twelve-tone work with surprisingly warm, almost tonal moments
- Webern: Variations for Piano, Op. 27, spare and crystalline
- Bartók and Messiaen for symmetrical scales, and many film scores for atonal suspense
Atonal Music FAQ
Is atonal music just random notes?
No. Atonal composers make careful choices about intervals, register, rhythm and form. Twelve-tone music is actually more systematic than most tonal music. It’s organized differently, not disorganized.
Can I play atonal music on piano or guitar?
Yes. The piano is ideal because you can see all 12 notes at once, but any instrument works. Start by playing a tone row slowly and singing along to train your ear.
How many tone rows are possible?
12 × 11 × 10 × … × 1 = 479,001,600 orderings of the 12 notes. Each row also has 48 forms in its matrix, so you’ll never run out of material.
Should beginners learn atonal music?
It’s a great creative exercise once you know your notes and basic intervals. Understanding atonality also makes you more aware of what makes tonal music sound “at home.”
More to explore: Harmonic Progression vs. Regression, Three-Note Pitch Classes, Scale Degree Functions and all of our free music theory tools. Want to compose with a teacher? See piano lessons and songwriting lessons in Canton.