Here is the run spelled out. All credit goes to T-Block for this breakdown.
The notes are:
Key Ab
/ B
/ Db, Eb, Db, B, F
/ Ab
/ Bb, B, Bb, Ab, F
(repeat)
then end wit some kind of Ab dominant type chord (Ab7, Ab13)
Ab / Gb-C-Eb-Ab or Ab / Gb-C-F-Ab
A little extra theory info: There are a few scales this run could based off of, but more than likely it is a variation of the pentatonic major scale (1, 2, 3, 5, 6) using a b3 instead of a normal 3 and adding a 4.
So, to learn this in any key, you would need the scale degrees 1, 2, b3, 4, 5, 6.