This guitarist, born March 10, 1947, is the founding member of a geographically-named rock band. In addition to knuckling down on his instrument, this M.I.T dropout is also an inventor, having created his own type of amplifier.

He is also an avowed animal rights activist. Not only is he a vegetarian, but he launched a foundation that provides animal protection and vegetarian resources. The foundation also worked to create homeless shelters for both people and animals. So he is a true philanthropist and there's so much more to him than a "feeling."

That's enough hints for now - think you know who it is? Find out if you're right!