My go-to artists when down or angry: Nirvana, Nine Inch Nails, Tool. Nirvana is my favorite band though, and I listen to them no matter what mood I'm in.

For me, I can't go wrong with classic rock, no matter what mood. My favorites, especially when hypo: Led Zeppelin (my other favorite band), Pink Floyd, The Who, The Velvet Underground, etc

I like a lot of metal, anything from the classics like Black Sabbath, Metallica, Mercyful Fate, Anthrax, Iron Maiden to more modern metal, such as Insomnium and Shadows Fall.

I also like some old-school pop. Love Michael Jackson and Motown music. I don't mind a little bit of old-school rap either from time to time, especially when "up." Sometimes selective R&B (depends on the artist/song)

Goth music is great too, especially when I'm lost in my thoughts. The Cure, Sisters of Mercy, and London After Midnight to name a few.