Trilogy and "The Apu Trilogy" of films by Satyajit Ray. Others are connected only by theme: for example, each film of Krzysztof Kieślowski's "Three Colors" trilogy explores one of the political ideals of the French Republic (liberty, equality, fraternity). Trilogies can also be connected in less obvious ways, such as "The Nova Trilogy" of novels by William S. Burroughs, each written using cut-up technique. The term is less often applied to music, such as the "Berlin Trilogy" of David Bowie which is linked together by musical sound and lyrical themes, all having been recorded at least partly in Berlin, Germany. The
Berlin Trilogy retreated to Berlin in a further attempt to escape his addiction and the spotlight: For many years Berlin had appealed to me as a sort of sanctuary-like situation. It was one of the few cities where I could move around in virtual anonymity. I was going broke; it was cheap to live. For some reason, Berliners just didn't care. Well, not about an English rock singer, anyway. While sharing an apartment with Pop, Bowie became interested in the German music scene, including acts such as Tangerine Dream, Kraftwerk and Neu!. Before moving to the apartment on Hauptstraße, Pop and Bowie