Happy Birthday today to keyboardist Rick Wakeman of Yes. He's 68. Also celebrating A Perfect Circle co-founder and guitarist Billy Howerdel (47).

Rick Wakeman is best known as the longtime keyboardist for Yes during five tenures between 1971 and 2004. He also released many solo albums over the years. He is currently the keyboardist for Yes featuring Jon Anderson, Trevor Rabin, and Rick Wakeman. He's written several books including an autobiography, and was inducted into the Rock and Roll Hall of Fame as a member of Yes this year.

See Yes featuring Jon Anderson, Trevor Rabin, and Rick Wakeman on tour this fall. They'll play The Palace in Albany Oct. 5. For more on the band and the upcoming tour, check out their official website here.

Maynard James Keenan (L) lead singer of A Perfect Circle and Billy Howerdel (R). Photo by Carlo Allegri/Getty Images