I love classical music. Yes, I was in a conservatory when I was younger and played guitar and all that stuff, so I also love rock.
I approach music and acting the same way, through spontaneous improvisation. I never really try to rehearse anything, do it over and over, except when we're inside a take.
As far as rock groups, I really like Stone Temple Pilots. As for classical composers, it's Bach. I love Paganini, too, the Italian composer who would break strings during a performance and finish playing on just one string. Someone I would have loved to play with is Jimi Hendrix.
