It even gets more interesting. I even think that the roots of what later became industrial (and a lot of electronic music for that matter) are first to be found on this album:
"Bitches brew" is musically a very intersting album because of the very heavy effects (for that time anyway) and it has been documented as the first album on which tapeloops were used and which was basically build on tapeloops and tapecuts. Much the same way we do now with samplers and computers, while they had to do it with looping fragments and cutting tapes and overdubs. Based on musique contrete obviously but the album was actually built in the studio with using the studio as an instrument. From the wiki about that album:
[quote]Bitches Brew also pioneered the application of the studio as a musical instrument, featuring stacks of edits and studio effects that were an integral part of the music. Miles and his producer, Teo Macero, used the recording studio in radical new ways, especially in the title track and the opening track, "Pharaoh's Dance". There were many special effects, like tape loops, tape delays, reverb chambers and echo effects. Through intensive tape editing, Macero concocted many totally new musical structures that were later imitated by the band in live concerts. Macero, who has a classical education and was most likely inspired by the 1930s and 1940s musique concrète experiments, used tape editing as a form of arranging and composition.
"Pharaoh's Dance" contains 19 edits – its famous stop-start opening is entirely constructed in the studio, using repeat loops of certain sections. Later on in the track there are several micro-edits: for example, a one-second-long fragment that first appears at 8:39 is repeated five times between 8:54 and 8:59. The title track contains 15 edits, again with several short tape loops of, in this case, five seconds (at 3:01, 3:07 and 3:12). Therefore, Bitches Brew not only became a controversial classic of musical innovation, it also became renowned for its pioneering use of studio technology.[4][/quote]
And it;s a great album. This one is probably in my top 10 best records ever.