Scale library · Altered

The Altered scale in all twelve keys.

Formula 1 ♭2 ♭3 ♭4 ♭5 ♭6 ♭7, step pattern H–W–H–W–W–W–W. In C it is C D♭ E♭ F♭ G♭ A♭ B♭. It is the scale for altered dominant chords (7♭9, 7♯9, 7♯5, 7♭13) resolving to a tonic — the V7alt in a ii–V–I. Pick a key below to see it drawn on the guitar fretboard or piano keyboard and hear it played.