HearmonyThe Chromatic Scale: All 12 Notes, Spelled and Heard
The chromatic scale is the scale that uses all 12 notes of the octave, each a half step apart. Starting on C and going up, it is C C♯ D D♯ E F F♯ G G♯ A A♯ B C: every white and black key on the piano in a row. Because it has no whole steps, it has no built-in home note, which is why it sounds like sliding rather than like a key.
What is a chromatic scale?
A chromatic scale is a scale made only of half steps (semitones), the smallest interval in Western music. There are 12 half steps in an octave, so the scale has 12 different notes, and 13 if you count the octave at the top.
The name comes from the Greek chroma, color. The other scales you know, such as major and minor, pick seven of these 12 notes; the chromatic scale uses them all. Compared side by side:
| Scale | Notes per octave | Steps | On C |
|---|---|---|---|
| Chromatic | 12 | All half steps | C C♯ D D♯ E F F♯ G G♯ A A♯ B |
| Major | 7 | W W H W W W H | C D E F G A B |
| Natural minor | 7 | W H W W H W W | C D E♭ F G A♭ B♭ |
| Whole tone | 6 | All whole steps | C D E F♯ G♯ A♯ |
| Major pentatonic | 5 | W W m3 W m3 | C D E G A |
For more on how half and whole steps build every other scale, see the guide to half steps and whole steps, and for the seven-note pattern itself, the major scale formula.
How do you spell the chromatic scale?
The usual rule is sharps going up and flats coming down. A sharp raises a note and a flat lowers it, so each altered note points in the direction the line is moving.
| Direction | Chromatic scale on C |
|---|---|
| Ascending | C C♯ D D♯ E F F♯ G G♯ A A♯ B C |
| Descending | C B B♭ A A♭ G G♭ F E E♭ D D♭ C |
Notice the two places with no black key in between: E–F and B–C. Those pairs are already a half step apart, so they appear without any sharp or flat. Writing E♯ or B♯ in a chromatic scale on C is a common error; E♯ is the same key as F, and F is already there.
The rule works from any starting note. The chromatic scale on D going up is D D♯ E F F♯ G G♯ A A♯ B C C♯ D. Same 12 notes, different starting point.
The harmonic chromatic scale
Some theory courses and exams also ask for the harmonic chromatic scale, which is spelled the same way up and down. On C it is C D♭ D E♭ E F F♯ G A♭ A B♭ B C. The tonic (C) and dominant (G) appear only once; every other letter appears twice. This spelling matches how chromatic notes are usually written in a C major or C minor piece: B♭ and E♭ rather than A♯ and D♯, F♯ rather than G♭.
On an exam, read the question for the word "harmonic" or "melodic". If it just says "chromatic scale", the sharps-up, flats-down spelling is the safe default.
Where do you hear the chromatic scale?
You hear complete chromatic scales mostly in fast runs, and short chromatic fragments almost everywhere. A chromatic note squeezed between two notes of a scale is called a chromatic passing tone, and it is the most common use of chromaticism.
- "Flight of the Bumblebee" (Rimsky-Korsakov): long, fast chromatic runs that imitate buzzing.
- Chopin's Étude Op. 10 No. 2: the right hand plays chromatic scales almost the whole way through.
- "The Entertainer" (Scott Joplin): the opening D, D♯, E before the leap up to C is a chromatic approach note in action.
- Film scores: slowly creeping half steps, like the two-note figure in the Jaws theme, are a stock sound for suspense.
- Jazz and blues lines: players approach chord tones from a half step below or above, which is a chromatic note resolving.
How to play the chromatic scale
Because every step is the same size, the chromatic scale is a technique exercise as much as a scale. Keep it slow and even before you make it fast.
Piano
The standard right-hand fingering is simple: thumb (1) on white keys, middle finger (3) on black keys, and index finger (2) on the second key of the white pairs E–F and B–C. Going up from C: C 1, C♯ 3, D 1, D♯ 3, E 1, F 2, F♯ 3, G 1, G♯ 3, A 1, A♯ 3, B 1, C 2.
Guitar
One fret equals one half step, so playing frets 0 to 12 on a single string gives a full chromatic octave. For a positional version, use one finger per fret across four frets and move string to string.
Voice
Singing the chromatic scale accurately is hard, because each step is small and it is easy to drift. Sing it slowly against a piano, and use chromatic solfège syllables (do di re ri mi fa fi sol si la li ti do going up). The solfège guide lists all of them.
How to hear half steps and chromatic notes
Hearing the chromatic scale comes down to hearing the half step itself, and then noticing when a note falls outside the key. Practice both separately.
- Half vs whole step. Play C–D♭, then C–D. The half step sounds tight and close; the whole step sounds like a normal step of a melody. Repeat with random starting notes until you can call it without thinking.
- Direction. Play a half step up or down at random and say which. Give descending steps as much practice as ascending ones.
- Out of the key. Play the C major scale, then sneak one chromatic note in (C D D♯ E). Name where the "wrong" note was.
- Tuning versus chromatic. A half step is 100 cents. A note that is 20 or 30 cents off is out of tune, not a different note; a note 100 cents away is a new chromatic note. Hearing that boundary is what fine-pitch training builds.
Common mistakes with the chromatic scale
- Uneven rhythm on E–F and B–C. Two white keys in a row tempt the hand to rush. Use a metronome and say the note names.
- Mixing sharps and flats in one direction. C C♯ D E♭ E going up is not wrong to the ear, but it breaks the spelling rule most teachers expect.
- Skipping or doubling a note. Count to 12 as you play. If you land on the octave at 11 or 13, something slipped.
- Thinking it has a key. The chromatic scale on C and on F♯ contain the same notes; only the starting point changes.
Practice half steps in Hearmony
Hearmony trains the listening skills behind the chromatic scale. Interval Peaks opens with "Steps: seconds", where you tell a half step from a whole step going up and down, then moves on through every interval to the octave. Tuning Lab teaches that a semitone is 100 cents and asks whether a note is sharp, flat or in tune, with gaps that shrink down to about 6 cents. Both are on the path laid out in the beginner ear training plan. Hearmony is an iPhone app, available on the App Store.
For the history and other spellings, see the reference entry on the chromatic scale.