I'm not much on OT threads, but this week, on the 40th anniversary of Marvin Gaye's classic album, "What's Going On," Motown commemorates it with a reissue, and there are bound to be lots of remembrances and stories about the recording.
To me, the coolest story happens to be the one about Lem Barney getting Marvin a 'tryout' (more like a 'workout') as a wide receiver with the Lions, and then getting the chance to do backing vocals along with Mel Farr on What's Going On. Barney's voice in particular is clearly heard; I always had doubts about whether Mel Farr did anything but talk in the background, but I caddied once for Obie Benson of the Four Tops and the co-writer of "What's Going On" who confirmed the story and assured me that Farr and Barney were both there. (Those guys were all golf nuts; Obie, Duke Fakir also of the Tops, Smokey Robinson, Marvin. I think they had more fun on the golf course than on stage.)