>music long ignored that was rediscovered and became of interest, at which point the company could go to its archive and digitize the masters again with the latest tech.
For anyone interested check out the part-isolated "mogg" files from the Rockband games.
Harmonix doesn't really like people getting those stems out of the games, though (it can affect their ability to license music going forward). I'm part of the GH community, and when RB4 was ripped, HMX got pissed. Admittedly, the people downloading the rips largely didn't care about analyzing the music, they just wanted to play RB4 songs for free, so I totally understand why they'd be pissed.
They care far less about the stems they put out in the pre-RB days, in GH1/2/80s. But they were mostly covers in the first place (except for the bonus songs, and a small handful of main setlist songs).
For anyone interested check out the part-isolated "mogg" files from the Rockband games.