In the late 1960s and early 1970s, Pierre Boulez collaborated as a commentator and conductor on a series of challenging and distinctive BBC Television programmes about twentieth-century music. This chapter discusses the range of Boulez’s appearances on British television but focuses principally on this group of visually innovative broadcasts that combine musical analysis and performance to illuminate the creative processes of composers including Debussy, Berg, Schoenberg and Webern. Boulez’s own compositions, including ‘Improvisation II sur Mallarmé’ and Le Marteau sans maître, are also imaginatively visualised, with highly distinctive camerawork and cutting-edge graphics. Created initially for the television studio and later as individual film documentaries, these broadcasts often exploit the full potential of the medium of the time. Little seen since their initial transmission, these programmes remain provocative creative resources for all those engaged with combining music and moving images.