Hansa's acoustics. Many of the same musicians from the previous records—Eno, Visconti, Alomar, Dennis Davis and George Murray —returned for the Lodger sessions. A new addition was future King Crimson guitarist Adrian Belew, whom Bowie had "poached" while the guitarist was touring with Frank Zappa; Belew's eventual bandmate Robert Fripp played guitar on "Heroes". Much of Belew's work on Lodger was composited from multiple takes played against backing tracks of which he had no prior knowledge, not even the key. Belew recalled, "When I arrived, they had about twenty tracks already done: bass, drums, rhythm guitar, but no vocals. They said, 'We're not going to let you hear these songs. We want you to go into the studio and play accidentally – whatever occurs to you'." Belew described the final guitar solo on "D.J." as sounding like "you're changing channel on the radio and each channel has a different guitar solo on it". The sessions saw Bowie and Eno utilise techniques from Eno's Oblique Strategies cards. According to biographer Chris O'Leary, these cards were "part-fortune cookie, part-Monopoly 'Chance' cards", intended to spark creative ideas. Eno and Bowie used them previously to create some of the instrumentals for "Heroes". Using the cards, Bowie and Eno conducted numerous experimental methods during the sessions. Some of these included using old tunes played backwards, employing identical chord sequences for different songs and having the musicians swap instruments, as Alomar and Davis did on "Boys Keep Swinging". Pianist Sean Mayes explained: "[Bowie] was very keen on spontaneity. He liked everything to be recorded in one or two takes, mistakes and all." Biographer Nicholas Pegg writes that several songs, including "African Night Flight", "Yassassin" and "Red Sails", were composed "around a melodic clash of disparate cultures". Due to the experimental nature of the sessions, initial working titles for the album included Planned Accidents and Despite Straight Lines. Unlike the lyrics for "Heroes", which Bowie largely improvised as he stood next to the microphone, he wrote most of Lodgers lyrics at a later date; they were unknown during the Mountain sessions. Other than "Yassassin" and "Red Sails", most of the tracks were recorded with working titles. Alongside the use of Eno's Oblique Strategies cards, Visconti recalled Eno having more leeway during the sessions than those for Low and "Heroes". For "Look Back in Anger", Eno gave the backing band eight of his favourite chords and instructed them