Sept. 20 will most likely be a somewhat bittersweet 64th birthday for Styx founder and bassist, Chuck Panozzo. That's because it also marks the birth of his fraternal twin brother and former bandmate, John Panozzo, who passed away back in 1996.

Together with their childhood neighbor Dennis DeYoung, the two brothers created the now-iconic band back in 1961. He's semi-retired now, appearing with the band onstage on a guest basis.

Over the course of their career, Styx churned out some of the most well-known hits in rock history, including 'Renegade,' 'Blue Collar Man' and 'Lady.' You can read our Top 10 Styx Songs List here.