Here are some songs I liked and I hope you do too.
http://www.youtube.com/watch?v=UtlaTNI1TaU
Do You Like Waffles?
http://www.youtube.com/watch?v=RHsDa9_HSlA
Sweet Home Alabama is my all time favorite Song.
http://www.smashbros.com/en_us/music/music23.html
Flatzone 2
http://www.smashbros.com/en_us/music/music10.html
Super Smash Bros. Brawl Main Theme
http://www.youtube.com/watch?v=LPPwdlgv2cs
Meta Knight's Revenge
Meta Knight's Revenge is my favorite Brawl song.