A longtime member of the pioneering German electronic unit Tangerine Dream, keyboardist/composer Christopher Franke was born in Berlin on April 6, 1953, subsequently studying classical music and composition at the Berlin Conservatory. While playing in the jazz-rock group Agitation Free, he and his mentor, Swiss avant-garde composer Thomas Kessler, set up a sound studio and began teaching courses in improvisation, laying the groundwork for what would become the Berlin School of Electronic Music.