1960s. While Macero produced many artists' albums, he had an especially long and prolific relationship with Miles Davis. He produced or co-produced most of Davis' Columbia catalog including the classics Sketches of Spain and Someday My Prince Will Come. Macero's role of producer was further expanded on Davis' later forays into electric fusion, such as In a Silent Way, Bitches Brew, and A Tribute to Jack Johnson, which were highlighted by Macero's innovative mixing and editing techniques. In 2001, Miles Davis biographer Paul Tingen likened Macero's role in the electric music of Davis to that of George Martin with the Beatles. Taking his cue from Tingen, Nick Southall described the impact of Macero's work on In a Silent Way in a 2003 Stylus Magazine article:Behind the scenes, Miles and Teo took the tapes of the In a Silent Way sessions and transformed some beautiful, folk-tinged, melody-driven sets into two exquisite, beguiling and otherworldly pieces of music. Using techniques that pre-dated the proliferation of tape loops, cut-ups, edits and sequencing in rock, pop, hip hop and dance music, Miles and Teo took apart the original recording and reassembled them outside of any traditional or accepted jazz structure or melodic framework. This idea of taking jazz away from its birth, genesis and flowering as a live art and into the studio would soon become standard practice, but in 1969 it was groundbreaking. Some listeners and critics have complained that Macero overproduced Davis' recordings, and cut too much. But after hearing the unedited tapes from the In a Silent Way sessions, jazz critic John Ballon wrote that the original editing and production "attests to the producing genius of Teo Macero." Ballon continues: It took a force like Teo to splice together a cohesive album out of so many inspired pieces. Not only did Teo have the balls to stand up to Miles on creative decisions, he had the right. And Miles knew it. And while his ego rebelled against any producer messing with his music, Miles knew that incredibly great records were borne out of the conflict and compromise of his relationship with Teo. On Davis' 1970 release Bitches Brew, Macero continued to expand his innovative practices, and "Bitches Brew not only became a controversial classic of musical innovation, it also became renowned for its pioneering use of studio technology." Some of the controversy at the time also stemmed from the use of