1968, Deep Purple made their live debut at a gig in Tastrup, Denmark. Formally known as Roundabout, guitarist Ritchie Blackmore suggested a new name, Deep Purple, after his grandmother's favorite song. "Deep Purple" had been a hit for Peter De Rose. Blackmore's grandmother had repeatedly asked if they would be performing the song. 1968, Apple Music ran advertisements … [Read more...] about Today in Rock History – April 20