co-produce after mixing The Idiot. In 2000, Bowie stressed Visconti's importance as co-producer, stating that "the actual sound and texture, the feel of everything from the drums to the way that my voice is recorded," was due to Visconti. Eno was not a co-producer, despite being widely perceived as such. Visconti said: "Brian is a great musician, and was very integral to the making of those three albums [Low, "Heroes" and Lodger]. But he was not the producer." Like The Idiot, the Low sessions began with Bowie and the rhythm players running through the backing tracks quickly, beginning in the evening and continuing into the night, which biographer Thomas Jerome Seabrook believes fit the mood of the music perfectly. As he had done on Station to Station, Bowie left Alomar in charge of the guitar, bass and percussion arrangements, with instructions about how they should sound. Bowie brought many song ideas he had in Switzerland to the sessions; some, including "What in the World", were brought back from The Idiot. According to biographer Paul Trynka, Eno arrived after the backing tracks for side one were "essentially" finished. Shortly before arriving, Eno had recorded with Harmonia, who would serve as a major influence on the recording of Low. On his arrival, Eno and Bowie sat down with the musicians and informed them of the next stage in the recording process. According to Young, they played tapes of the Man Who Fell to Earth soundtrack for the musicians and said they planned something similar. Young added he and some of the other musicians were not fond of the idea, as it was outside their experiences. Bowie thought RCA would feel the same way, warning: "We don't know if this will ever be released, but I have to do this." Visconti insisted on completing the project, telling Bowie and Eno: "Wasting a month of my time with David Bowie and Brian Eno is not wasting a month of my time." Two weeks into the project, Visconti compiled a tape and played it for Bowie, who was surprised and enthusiastic that they had an album. Drum sound Low is noted for its unusual drum sound, described by biographer David Buckley as "brutal" and "mechanistic". Davis played the drums, which Visconti processed using an Eventide H910 Harmonizer. The Harmonizer was the first commercially available pitch-shifting device, which could alter the pitch of a sound without