Dalen Quaice wrote:
If there were 150 tapes, each containing up to 30 minutes length averaging about 17 minutes a tape (as I doubt all were full), that comes out to ~ 42.5 hours of source material. The CDs run time is ~ 17 hours.
But that runtime would include alternate or botched takes that didn't end up being used. As Indysolo
said in his recent interview, they included the approved take of every distinct piece that was recorded.