BGM is the fourth studio album by Yellow Magic Orchestra, released on March 21, 1981. The title stands for "Background music", though Japanese TV and press advertising alternately used "Beautiful Grotesque Music". This album was produced by Haruomi Hosono. Recording started on January 15, 1981, in an effort to release the album by March 21, 1981. The album was the first of any kind to feature the Roland TR-808, one of the earliest programmable drum machines; YMO had already been the first band to use the device, featuring it on-stage as early as 1980. In addition to the TR-808, this was also their first studio album recorded with the Roland MC-4 Microcomposer. Overview Alfa Records, YMO's record company, had installed a 3M 32-track digital recorder in its studio shortly before YMO started recording BGM. Since Hosono was not fond of its overly sharp sound quality, he recorded all the rhythm sections for BGM on a TASCAM 80-8 analog recorder first and copied them with the 3M machine, resulting in the fuller, much compressed rhythm tracks. Unfortunately, no known working samples of the 3M recorder exist in Japan today, making it quite difficult to play the master tape. One of the earliest uses of the TR-808 for a live performance was by Yellow Magic Orchestra in 1980 for the song "1000 Knives", an electro rendition of member Ryuichi Sakamoto's "Thousand Knives" (1978). The hand-clap sound was later publicized on this album, being used again on "1000 Knives" and in "Music Plans", another of Sakamoto's songs. Peter Barakan debuts as YMO's co-lyricist; he had previously provided lyrics for Ryuichi Sakamoto's solo track "Thatness and Thereness". Sakamoto himself was often absent from the BGM recording sessions due to creative differences with Hosono, and he turns in "Music Plans" as his only new composition for the album, since "1000 Knives" (from his 1978 debut album The Thousand Knives of Ryuichi Sakamoto) and "Happy End" were new recordings of his earlier materials. Another song, "Rap Phenomena", was an early attempt at electronic rap. "Loom" is a re-working of "The Infinite Space Octave" by YMO computer programmer Hideki Matsutake, and features a slow, upward glissando similar to the Deep Note, THX's audio logo. A similar sound was previously used by YMO members Haruomi Hosono and Ryuichi Sakamoto for their 1978 album Cochin Moon. Like most YMO albums, song titles were printed in both Japanese and English,