After graduating from high school in Jaderberg, he studied at a college nearby, but quit a short while later.
Subsequently, he toured as a drummer in several bands, playing throughout northern Germany, and for half a year throughout Africa.
In 2008, under the name Peter Behrens (Ex-Trio) & Drei Mann im Doppelbett a song called "drei zwei", written by three Trio-fans, was published, for which a music video was produced.
In the late 1980s, Peter Behrens appeared in a few films. In his first three of these (Andre Handles Them All, Drei gegen Drei and Thousand Eyes), he played even bigger roles.
Together with Stephan Remmler and Gert "Kralle" Krawinkel, Behrens was a member of the German band Trio in the early 1980s, where he played the drums. The band became known particularly through the minimalist title Da Da Da, as part of the New German Wave. The other two members met Behrens through a newspaper advertisement.