I'm not saying Dave Grohl isn't a good guy. Just that the music he makes is commercial radio rock. Foo Fighters, nickel back, breaking Benjamin, three days grace. Pop evil. Etc, etc. plenty of good non mainstream stuff out there but you gotta look for it.
Tsunami Rising, Pasadena, Doco, Katastro. SOOO many more!
If I were Bob Marley I'd sing Could You Be Loved, and if I was Half Pint I'd rep the lord up above, if I was Mike Tyson I'd look for a fight, and if I was the Boomtown Rats I would be staying up all night, if I was the King Ad Rock I would get stupid dumb, and if rhymes were valiums I'd be comfortably numb.