Play it in any key

You can move anything you practice to another key with one keypress, round the circle of fifths, or automatically after a few clean passes.

Twelve keys, one shape

A progression learned only in C can fall apart when a singer asks for it in E, because your hands have memorized the white keys it happened to use.

Here the material is written as degrees, so the same exercise exists in all twelve keys. Change the key and the chords follow: in E, the second, fifth and first degrees become F♯m, B and E.

The practice screen with the chart Dm G C and the badge reading 2-5-1 in C. — Two–five–one in C: Dm, G, C.

The same practice screen in E: the chart reads F♯m, B, E and the badge reads 2-5-1 in E. — The same three degrees in E. The badge in the corner shows the current key.

Move it while you play

You can change key without leaving the drill. Some keys move by a half step, others step round the circle of fifths, and others switch between a major key and a minor one.

`Q`	Down a half step
`W`	Up a half step
`A`	Back one step round the circle of fifths
`S`	On one step round the circle of fifths
`L↑↓`	Major ⇄ its relative minor
`C`	Major ⇄ minor on the same tonic

In the Songs subject the same keys transpose the song itself. If a chart sits too high for your voice, press Q a few times to bring it down.

Tours through all the keys

You do not have to keep track of which keys you have practiced. Pick one of the four tours: the circle of fifths in either direction, or chromatic up or down. Once you have played the material through, the app moves to the next key.

The order setting, with four all-keys tours: circle of fifths both ways and chromatic both ways. — Four tours, plus how many times each key is played before moving on.

Chords and progressions have a separate setting for this: after a set number of repeats, go to the next key. You can count only the clean repeats, so you stay in a difficult key until you play it correctly.

The after-repeats setting: after 5 repeats, next in circle of fifths, with an "only after correct" option. — Five clean passes, then the next key round the circle.

Songs move too

A song is stored as chord names rather than degrees, so it has its own transposition buttons: half step, whole step or a perfect fifth, up or down. The app also shows the key it detects in the song.

The spelling stays readable: a half step up from E gives F rather than E♯. If you want the strict enharmonic spelling, hold Shift while clicking. There is more on the transposing a song page.

The transposition panel for songs: detected key, and six buttons to move the chords up or down. — The detected key and the six transposition buttons.

Try a key change

Two–five–one in C Start here, then press W a few times and watch it move. Try it →Two–five–one round the circle The same progression, moving round the circle of fifths automatically. Try it →Next key after three clean passes The key changes only after three correct passes. Try it →A major scale, chromatically upward C, then C♯, then D… twelve keys, single notes. Try it →

All the features