Decca, that is pretty amazing! Imagine being part of an orchestra and playing pieces like the ones in HBP... Wooow.
I like alot of music, but I don't often listen to popular music and I am not a fan of rap and hip-hop or country. I went through a phase when I listened to all depressing, boring music. I get it mostly from movies, a friend of mine, or I hear it in completely random circumstances. I am really loving...Cocorosie (Werewolf is awesome), Florence in the Machine, A Fine Frenzy (always), Bat For Lashes, Blue Foundation, Cat Power, The Cinematic Orchestra, Damien Rice, Ingrid Michaelson, Jeff Buckley, Missy Higgins and Regina Spektor... and many others.

Wolves by Phosphorescent is a very good song. On a more popular note, I'm very into Coldplay and Radiohead. I'm also a huge fan of the HP scores, of course, from both Nicholas Hooper and John Williams.
I'm a very emotional person (again.. my weird mental phenomenon that I can't explain properly) so I like very intense and emotional things.. if that makes sense. Like the climax scenes in Harry Potter are always the best, and the most emotional songs in HBP... Example; I'm in love with
Slughorn's Confession because of TWO notes in the whole song (2:17 - 2:25 and 3:10 - 3:17).
I think I'm a bit passionnate.