TOD:
I can't pick just one of anything from the 1970s. I've got a seven-CD set of 70s favorites and I love most every silly and wonderful song and then wonder where the rest of the good stuff is.
So, here's just a few:
Neil Diamond, "Tap Root Manuscript"
The Guess Who, "Live at the Parmount"
The Temptations, "Papa Was a Rolling Stone"
Almost anything by Barry White, Elton John and Carole King.