So do you like Captain Beefheart's Trout Mask Replica album?
It sounds so much like everyone in the band is 'doing their own thing', just playing random and entirely different tunes, in random entirely different time signatures, and all at the same time. But apparently Beefheart put his band through absolute torture after the initial recording of the album, as he forced them to practice for weeks, until they were able to replicate the whole thing, exactly as per the recording, time and time again.
And if it really is just the total spontaneous nonsense that it mostly sounds like to me, then that makes Beefheart's band absolute genuises to be able to do what they managed to do. As several people have commented before me.
You'll know how polarised opinions are regarding this album. Is it absolute genius, or is it just random noise, that each musician literally just made up as they went along? (Or is it both?)
And then Beefheart recorded his vocals over the top of the music, IIRC.