I go through phases with music. My first music love was nineties rock of course, given my age.
Red Hot Chili Peppers
(old) Green Day
When I was a teenager and discovered metal, I listened to little else. Bands like these occupied all my time:
Type O Negative
Then I started getting into jam bands. The Dead, Rusted Root, String Cheese Incident, I would lose myself.
A bit more recently, I started downloading assorted jrock, wanting more music like the excellent Bleach theme songs. I somehow discovered my current obsession, Dir en Grey, an amazing Japanese metal band that takes my mind on epic journeys. I have been buying up their music like crazy on Google Music.
If I had to pick one kind of music only for the rest of my life though, it would have to be metal. Nothing else makes me feel as good.