• A flat,a-flat,a flat,A♭

A-flat (pluralA-flats)

1. (music) Atone onesemitone belowA, 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 ofA-flat major.

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

• (tones in the12ET)tones;C♭,C,C♯,D♭,D,D♯,E♭,E,E♯,F♭,F,F♯,G♭,G,G♯,A♭,A,A♯,B♭,B,B♯,

• fatal,Falta