When I say "Tatum fingerings' you must realize I'm only speaking from my personal viewpoint. Every pianist is different and every pianist feels things in his or her own unique way. The fingerings given here are just my take on the Tatum concept of using the stronger fingers, 1-2-3, down the keyboard. We will look at ascending runs later on, but for now, here are the descending 13ths from C13:
C13:
C13 audio:
F13:
F13 audio:
Bb13:
Bb13 audio:
Eb13:
Eb13 audio:
These are all 2-1 fingerings.
That's the first part of this particular look at Tatum 13ths fingerings. Now from Ab7 they get a little trickier.