This chapter explores the multi-decade career of Tangerine Dream and their founder, Edgar Froese, with an equal emphasis on the band’s practices during the 1970s and 1980s. We situate Tangerine Dream’s prolific discography within multiple styles such as kosmische Musik, ambient, techno/trance, and synthwave, while highlighting the band’s influences and legacies in live music and Hollywood film scores. First, Tangerine Dream’s evolution during the 1970s is traced, involving the group’s central role in the ‘Berlin School‘ of electronic music. Classic albums on Ohr, from Electronic Meditation to Atem, led to success particularly in Britain and France. With the signing of the band to Virgin Records, the subsequent sections explore landmark albums such as Phaedra and Rubycon, and the important roles of Christopher Franke and Peter Baumann in the group’s classic configuration. We then highlight Tangerine Dream’s iconic live tours, stretching from Australia to America, as well as influential concerts in Eastern Europe. The band’s extraordinary career in film music, especially in 1980s Hollywood, forms the focus of our conclusion, where the mark of Tangerine Dream’s major influence can be seen in media as diverse as the bestselling video game Grand Theft Auto 5 and the Netlix hit series Stranger Things.