Before the end of 1976, Bowie's interest in the burgeoning German music scene, as well as his drug addiction, prompted him to move to West Berlin to clean up and revitalise his career. There he was often seen riding a bicycle between his apartment on Hauptstraße in Schöneberg and Hansa Tonstudio, the recording studio he used, located on Köthener Straße in Kreuzberg, near the Berlin Wall. While working with Brian Eno and sharing an apartment with Iggy Pop, he began to focus on minimalist, ambient music for the first of three albums, co-produced with Tony Visconti, that became known as his Berlin Trilogy. During the same period, Iggy Pop, with Bowie as a co-writer and musician, completed his solo album debut "The Idiot" and its follow-up "Lust for Life", touring the UK, Europe, and the US in March and April 1977.