Open Culture recently posted a link to Abbey Road but with only Paul's bass lines, but the actual content got taken down. [0] It was really cool though, in part because it's not nearly as precise as I would have thought, which made it feel really organic.
I imagine studio-era Beatles in particular would be difficult.
Microphone bleed, lots of overdubs (especially vocals), and repeated re-layering tracks on tape over and over due to channel limitations. They really were doing crazy stuff with limited tech.
I think this would be hard for bands that really fill the spectrum and don’t have that clean treble, mid, bass separation. Or recordings really compressed into a frequency range.
Now this makes me want to see what happens with like My Bloody Valentine and Husker Du :).
[0] https://www.openculture.com/2022/04/hear-the-beatles-abbey-r...