Bushido, by Underworld do you mean from Brinstar? I don't think I have it. I might need to look around.
Mother 2 Melee
Porky's Theme
Humoresque of a Little Dog
Battle! Palkia & Dialga
Battle! Ruby and Sapphire
Menu (Melee)
Those I have and are converting :)
EDIT: I think Underworld is The Dark World from Zelda, Correct? Or it's from SSBB originals.