Hi Peter,
Loads of versions of this great song, written by Johnny Bristol, Harvey Fuqua and Vernon Bullock.
Jr Walker had the Soul / Motown smash with it!
It was a Pop Soul hit when new.
Rarest version is most probably the Bay Brothers (White Pop Act) on US Millenium which gained favour in Modern / Crossover circles around 15 years ago... and I think played first (as I recall) by Rick Scott.
I was almost certainly first to play the California Raisins version (because, if people ever needed a different version to Junior Walker, it was certainly better than the Bay Bros) around the same time (early Yarmouth). I played it as Buddy Miles (which, of course, it really is) and I recall it did cause a stir at the time.
Also there are versions by Younghearts, Hearts of Stone, Motherlode, Electrifying Casmeres and and and!
Jr Walker was never really a 'Northern' tune back in the day - always a straight 'club' sound that gained favour at Pitches early 90's, along with a host of other great Popular / Soul tunes... that now seem to be 'Northern' staple classics.
Sean