The video above is from VH1. However, I am almost sure that the original is from Soul Train, since Don Cornelius’ voice is hard to mistake. It isn’t marked, however, as far as I can tell in the commentary.
There were a great number of memorable songs released in 1972, including “American Pie,” “Lean On Me,” “Alone Again (Naturally)”, “Rockin’ Robin,” “City of New Orleans,” “Rocket Man (I Think It’s Going to be a Long Long Time)” and others. Check out this list.