Super Smash Brawl (Wii) Main Theme Composer is...

There are plenty of themes, I feel, that Ando could still incorporate into the game aside from the ones already done. They did that kind of thing with SSBM to some extent (such as the Balloon Fight theme for Infinite Glacier or the Mach Rider theme in Big Blue), I don't see why he wouldn't for Brawl.

This is merely speculation, but for example, he could throw in something like "Hyrule Castle" from A Link to the Past for a Zelda stage, or something back from Kirby's Adventure (which he helped do the music for, anyway) for a Kirby stage. I mean come on, for a Metroid stage, to my knowledge he hasn't really even touched any of the great stuff from Super Metroid (unless you want to count Samus's victory theme with that).

Jam it back in, in the dark.