I play Feelin Alright different . I do Cm7 to F9, not like the original C7to F7---One night I realized I could go into 'Mr Magic" (2:20 or so) on the first lead. Ive been doing that way ever since.
The 2nd lead (4:08)is just regular lead. I use a Natural minor tuned harp. Its in 'what I call a Fm harp '
Its basically an f harp with 3rds and 6th flated. First blow note is F.
I dont do the lee oscar labeling. I do what works for me