How can you not smile while you play this groove? It’s magic. Try to be sad while you listen to it; try to be sad while you play it. I dare you! I also always suspected that this was Jamerson, and sometimes it’s hard to tell with these Motown tunes, but Wilton Felder (who I only knew for his saxophone career) is the culprit in this case. Either way, killer groove and super Sick!