"Disc 2" is a list of additional score titles that are registered in BMI (some without work ID numbers) but do not appear on the soundtrack- they are likely included in the film itself.
Single CD soundtrack for the film. Identify is written by Billy Corgan and sung by Natalie Imbruglia. The other tracks are the instrumental score composed and performed by Billy and Mike Garson. Other bands on the soundtrack include Remy Zero and David Bowie. The CD itself has a white background with cryptic symbols.
2CD promo set that splits the soundtrack in half. One CD contains all the bands, the second contains the score. The CDs have a grey background with cryptic symbols.
Promo silver CDR with plain black lettering and a back insert with track listing.
Promo 5-track interview CD. The questions asked are printed on the back insert, with each answer given by Billy being a separate track.
Movie DVD. Songs may appear edited & under dialogue/sound effects.