the song/instrumental split, Visconti said: "We felt that getting six or seven songs with Bowie singing, with choruses and verses, still make for a good album ... then making the second side instrumental gave a perfect yin-yang balance." Biographer Chris O'Leary writes that the instrumental pieces share the theme of "a tour of an imaginary Eastern Europe by the isolate, paranoiac character of Lows manic side". Some tracks, including "Speed of Life" and "A New Career in a New Town", were originally going to have lyrics, but Bowie could not come up with suitable words and left them as instrumentals. The instrumentals feature contributions from Eno, who used his portable EMS AKS synthesiser. Visconti recalled, "It had no keyboard, just a joystick, and he came up with wonderful sounds you can hear all over the album that weren't produced by conventional instruments." Side one Author Peter Doggett describes "Speed of Life" as a perfect opening track, in the sense that it brings the audience into "a subject too profound for words". It features a rapid fade-in that Pegg believes makes for a "bizarre" opener, writing that "[it's as if] the listener has just arrived within earshot of something that's already started". "Breaking Glass" is a song-fragment, featuring six lines of lyrics, two of them demanding the audience "listen" and "see". Eno said of the track, "the feeling around was that we'd edit together ... and turn it into a more normal structure" before Alomar vetoed the idea and recommended leaving it as it was. Credited to Bowie, Murray and Davis, Alomar recalled the trio mainly composed the song. O'Leary writes "What in the World" was created around the beginning of the sessions and was possibly slated for inclusion on The Idiot; it features backing vocals from Pop. The song is one of the few tracks on Low to combine art rock with more straightforward pop. According to Pegg, it features a "wall of synthesiser bleeps against a barrage of guitar sound [and] distorted percussion effects". The lyrics describe a little girl who is stuck in her room. "Sound and Vision" contains wordless backing vocals from Hopkin, which she recorded before there were lyrics, a title or a melody. Bowie's vocals take a full 1:45 to appear; Eno insisted on this to "confound listener expectations". Described by Bowie as his "ultimate retreat song", the lyrics reflect his mental state following his