Krautrock (also called kosmische Musik) is a broad genre of experimental rock that developed in West Germany in the late 1960s and early 1970s among artists who blended elements of Psychedelic Rock, Electronic music, and Avant-Garde influences. These artists largely avoided the blues influences and song structure found in traditional Anglo-American rock music, instead utilizing hypnotic rhythms, tape-music techniques, and early synthesizers. Prominent groups associated with Krautrock music included Neu!, Can, Faust, Kraftwerk, Cluster, Ash Ra Tempel, Popol Vuh, Amon Düül II, Tangerine Dream, and Harmonia.