The final piece in what Bowie called his "triptych", "Lodger" (1979), eschewed the minimalist, ambient nature of the other two, making a partial return to the drum- and guitar-based rock and pop of his pre-Berlin era. The result was a complex mixture of new wave and world music, in places incorporating Hijaz non-Western scales. Some tracks were composed using Eno and Peter Schmidt's Oblique Strategies cards: "Boys Keep Swinging" entailed band members swapping instruments, "Move On" used the chords from Bowie's early composition "All the Young Dudes" played backwards, and "Red Money" took backing tracks from "Sister Midnight", a piece previously composed with Iggy Pop. The album was recorded in Switzerland. Ahead of its release, RCA's Mel Ilberman stated, "It would be fair to call it Bowie's "Sergeant Pepper" ... a concept album that portrays the Lodger as a homeless wanderer, shunned and victimized by life's pressures and technology." As described by biographer Christopher Sandford, "The record dashed such high hopes with dubious choices, and production that spelt the end—for fifteen years—of Bowie's partnership with Eno." "Lodger" reached No. 4 in the UK and No. 20 in the US, and yielded the UK hit singles "Boys Keep Swinging" and "DJ". Towards the end of the year, Bowie and Angie initiated divorce proceedings, and after months of court battles the marriage was ended in early 1980.