Chord Ab Major

Ab takes three keys, Ab, C and Eb. Ab is the root, C the major third and Eb the fifth. Said aloud, its notes are A flat, C and E flat. In Ab, Ab and Eb sit on black keys and C on a white key.

Counting semitones in Ab, Ab to C is four and C to Eb is three. With A4 at 440 Hz, this position sounds Ab4 at 415.3 Hz, C5 at 523.25 Hz and Eb5 at 622.25 Hz.

With the right hand, you build Ab by playing Ab with the thumb, C with the index finger and Eb with the ring finger. From Ab4 to Eb5 the hand spans seven semitones.

In the first inversion, Ab moves up an octave and the lowest note becomes C, the major third. The fingers are 1 - 2 - 5. The second inversion starts on Eb, the fifth, and ends on C. The fingers are 1 - 3 - 5.

Ab and Fm have two notes in common, Ab and C.

You will find Ab in seven keys. In Ab major it is the I, in Db major the V and in Eb major the IV.