Awesome thread!!!! I'll have to post this one of course... it's only part one of like 6.. it's a 30 minute song! Liszt Sonata in B Minor! Just about one of the best compositions I can think of.. so much soul is in this music.
[YOUTUBE="http://www.youtube.com/watch?v=uSGUkvIHXLw"]Liszt Sonata in B Martha Argerich Part 1[/YOUTUBE]