this is a nice substitution dont do it unless u got over it with the keyboardist do it on the spot if they have a wide chord base and know the proggresion it is a ricky dillard progression
in the key of Ab when walking from the 2 -5-1
instead of doing this
Bb C C# D Eb
do this
Bb Ab F# E Eb
ILL POST THE CHORDS ANOTHER TIME
