It is a CD that pops out at random, you cannot control when you get a specific song you just get it.
What I would suggest is create a stage with a conveyor belt rotating toward a wall, then play on the stage with only the sandbag item on and set the item appearance speed to the max. All that will come out is stickers and the occasional CD.
So whack away!
Super smash bros brawl main theme!
Most CD's can be obtained in stages by beating up the sandbag items others are obtained in the subspace emissary eventually you will get the team galactic song.
From Warioware.
No.
Nope
It's in Latin.
The Sound Test states it as "Super Smash Bros. Brawl Main Theme". That's the name, considering that the song was composed exclusively for it. Source: http://www.smashbros.com/en_us/music/music10.html
You listen to this REALLY long song, then the REALLY long crredits.
It hasn't been found yet, but I'm sure it's somewhere.
Try this website: http://super-smash-bros.wikia.com/wiki/Challenges
While you are playing a match like teams or free for all you might see cd's pop out of nowhere grab them and it might be the song you are looking for.
The exact number of song's in SSBB is 258. I know because I counted every song on the smash bros dojo website under music then scroll all the way to the bottom and you will find a button with ????? on it, click it and you then click on full song list with secret song and you will have every song in SSBB!!!