C Dominant 7th Flat 13
C7b13 · Root
Every chord tone stacked from the root up.
Click keys to experiment with the chord
C – E – G – B♭ – A♭
1 – 3 – 5 – b7 – b13
Sometimes distinguished from 7#5 in certain voicing contexts — the natural 5th is retained alongside the b13.
The C7b13 chord sounds distinctive, with a dominant 7th flat 13 character. Its notes are C, E, G, Bb, Ab. This chord is commonly heard in jazz.