Documentary about amazing Brazilian musician Rogério Duprat, main orchestrator of Tropicália, his rehearsals with Gal Costa, Os Mutantes, Gilberto Gil and Caetano Veloso. There's also the first performance of his 1958 "5 Pieces for a Solo Cello" and pieces of the only recording of "Organismo", serial work inspired by a Décio Pignatari's poem.