Philip Glass, early protagonist of the Minimalist movement, studied with Milhaud and Nadia Boulanger. His first job, assisting Ravi Shankar on a film soundtrack, heralded the start of his own successful cinema career, and to date he has scored over fifty movies. Early works tended to be abstract, but from the mid-1970s his attention shifted towards the stage. His first operatic triumph, Einstein on the Beach, did much to reinvigorate the international contemporary opera scene. Profoundly interested in traditional cultures, Glass often draws on Eastern traditions, as in Monsters of Grace (1997), a multimedia collaboration based on the writings of Rumi.