Ever wonder what inspired Chuck Berry to write "Roll Over, Beethoven"? We did. Turns out, according to Rolling Stone and others, he penned it in response to his sister hogging his family's piano and playing classical stuff when Chuck wanted to dig those rhythm and blues. Well, that's the story, anyway. We'll be presenting various versions of the song here as time goes on. Here's vintage Chuck live, complete with fabled "duck walk," after he asks "Bay-toe-van" to forgive him.