I don't know if that's the right terminology, so feel free to correct me, but I'm thinking of songs where someone calls out a phrase and others i the group take it up. Here's a particularly nice example from the Indigo Girls that I've cued up at the point when Michael Stipe (REM) joins in:
And here's another from The Mamas and the Papas
And here's another from The Mamas and the Papas