Well, just on the surface of it, without getting into all the apt terms, some with cultural references and connotations, I think "spoken song" is pretty good and generic enough to describe what you're asking about, amn't I inchoate? But it works for me, and I love the older and newer cultural references, which also work. Terms, taken too seriously, can lead to narrower ideas about that which you are trying to include. The historicity or terms for this (such things)is another huge topic. Great question! Spoken song, oh yea, I know what that is, sort of!

Best ~ Tom