Michael Davis, bassist for the politically charged punk-rock pioneers MC5, passed away at the age of 68 on Feb. 17. MC5's influence in the hard-rock world stretches from their contemporaries the Stooges to future acts like Rage Against the Machine.

Davis was also a successful music producer and a talented graphic artist. In addition he started the Music is Revolution Foundation to help fund music classes in public schools.

The legendary bassist died at Enloe Medical Center in Chico, Calif., after being hospitalized for one month due to liver disease.