Originally Posted by obimark
Typical "Boogie" Riff pattern with some accent stabs. All in G#- gotta love those old Motown songs for "weird" keys... If you can't pick this out by ear after 30 minutes, there is something wrong. (Bass is prominent on the recording so it isn't buried)
Those "weird" keys are actually quite common when working with horns. It is the horn key of Ab.
I worked with a few horn bands and 1/2 the songs were in one of these keys: Ab, Bb, Eb