sentences:  While there is a discernible rock and funk influence in the timbres of the instruments employed, from a musical standpoint the album was a culmination of sorts of the musique concrète approach that Davis and producer Teo Macero (who had studied with Otto Luening at Columbia University's Computer Music Center) had begun to explore in the late 1960s.Both sides of the record were based around simple, repetitive drum and bass grooves (the track delineations on the original album were arbitrary), with the "melodic" parts snipped from hours of meandering jams.These techniques, refined via the use of computers and digital audio equipment, are now standard amongst producers of electronically based music.