A-flat

• A flat, a-flat, a flat, A♭

A-flat (plural A-flats)

1. (music) A tone one semitone below A, between G and A, denoted A♭.

   The bassoon came in on a low A-flat.

2. (music) A key or other mechanism for producing an A-flat.

   I had to take it to the shop because the A-flat was stuck.

3. (music) The key of A-flat major.

   We will now hear the third sonata, in A-flat.

• (tones in the 12ET) tones; C♭, C, C♯, D♭, D, D♯, E♭, E, E♯, F♭, F, F♯, G♭, G, G♯, A♭, A, A♯, B♭, B, B♯,

• fatal, Falta