ROM Hack Pokemon Black and White music changes?

[pgimps]

I looked every where for a guide on how to do this, and I am also trying to answer a few questions too.

1. Is this possible?

2. Is there a limit on the song length?

3. File type?

4. Can somebody please show me a TuT on how to do this?

Much thanks in advance,

Pgimps

EDIT: Found the TuT here:http://www.pokecommunity.com/showthread.php?t=239776

 

[andibad]

1. possible, follow teamfail tutorial on pokemoncomunity
2. recently is not have any limit i think since is can added more >10 track and is can more than 2 minuet long (without looped)
3. SSEQ --> Midi
4. you was found that XD