I love old school Skynyrd. To me, the best driving song in the world is Call Me the Breeze. Hell, Skynyrd is summertime cookout, beer drinkin' music. It don't get much better than that. That said, Ronnie the greatest singer of all time? I love him, but Freddie Mercury says hi... Not to mention Elton John in his prime.
Freddie Mercury was one of the all time greats. For me though, it's all Ronnie James Dio
