“Rock And Roll” was accepted into music vocabulary in part from the work of a Cleveland disc jockey named Alan Freed born on this day in 1921. Gavin and Wyatt join “Mr. Rock n Roll” for some on-air promotion while John looks over the old playlists from rock music history. Whether you call it “Big Beat” or “Rock n Roll” you are invited to listen to Alan Freed’s history which inspires Crosscurrents, 12/15 at 8 a.m.