His song, "Can't Take My Eyes Off You", became a 60s pop staple ... have a place in rock n' roll history with "Little Star", which is regarded as one of the greatest doo-wop songs of all time.

What that means is that rock and metal accounts for over 10 percent of the playlist and, no, it's not just artists from the old days. While some of these songs are over 60 years old, there's also ...