Haha, I never even know how to describe my music tastes-- I listen to so many different things, and I'm constantly trying out new sounds. I made a list on my Facebook profile a while ago, though, of my top 25 favorite classical composers and my top 25 favorite modern musicians.
Classical Music Top 25 (more or less in order):
Dmitri Shostakovich, Gustav Mahler, Ludwig van Beethoven, Antonín Dvořák, Jean Sibelius, Igor Stravinsky, Arvo Pärt, Witold Lutosławski, Benjamin Britten, Camille Saint-Saëns, Robert Schumann, Arnold Schönberg, George Gershwin, Maurice Ravel, Edgar Meyer, Giacomo Puccini, Sergei Prokofiev, Felix Mendelssohn, Anton Webern, Richard Strauss, Franz Schubert, Samuel Barber, György Ligeti, François Poulenc, Einojuhani Rautavaara
Normal-People Music Top 25 (more or less in order):
Animal Collective, Ben Folds, The Dresden Dolls, Tom Waits, DeVotchKa, Joanna Newsom, Estradasphere, Mirah, Gogol Bordello, Pretty Balanced, Fleet Foxes, Architecture in Helsinki, Motion City Soundtrack, Hanne Hukkelberg, Rilo Kiley, The Beach Boys, Muse, Billy Joel, Moxy Früvous, Great Big Sea, Reel Big Fish, Jonathan Coulton, Queen, They Might Be Giants, The Velvet Underground