Ooh, it's so much fun! The prof is hysterical, and we get to watch these crazy videos from the '50s and '60s--Mick Jagger and the rest of the Stones were adorkable as teenagers!--and just talk about rock music and history.

So, today's fact: The Beatles' album Sgt. Pepper's Lonely Hearts Club Band was the first concept album (think MCR's Black Parade), as well as the first album ever to include lyrics.