I'm restoring a recording from ~1992. The original was cut to a cassette on a Tascam 424 Portastudio. There are two tracks of just vocals, and they transferred extremely well to Garageband. The other two tracks were bounced to save space:
Track one is maracas and a occasional backing vocal, and I'm planning to save as much of that as possible and snip out the vocal, possibly piecing together the 12 bars from other data. (I can re-record those few if possible. I want to keep this as we all performed to this track.
Track two is, more or less, the band: Acoustic guitar, electric guitar, and bass guitar, and this track is the problem. It has all the tinniness you'd expect from a bounced track on a cassette four-track recorder.
Is there any way to separate these tracks out from each other enough that I can eq them separately to give some distinctiveness to the three instruments? I'd like to save the bass guitar in particular, as it's the track that'd be hardest to re-record.
At the very least, I'd like to separate the guitars out enough that we can use them as reference tracks for re-recording.