Michel Rostain began studying music as an autodidact at the age of seven. He pursued this intensely throughout his primary and secondary schooling in Nîmes. He later and more assiduously resumed musical studies. He first taught philosophy in terminal classes, then taught at the Department of Clinical Psychology, Paris VII. At the same time, he worked in a research laboratory in the humanities, the, and the Laborde psychiatric clinic, headed by Félix Guattari and Jean Oury. At this point in his life, Michel Rostain was able to devote himself to one of the things that was most dear to him with writing, music, and to do it his job. Thus, he founded a lyrical and musical theater company in 1978, and took over the direction of the of Quimper in 1995, while continuing to make musical stagings As director of lyrical and musical theater, Michel Rostain was director of the, scène nationale of Quimper from 1995 to 2008. For more than thirty years, he brought to the scene operas and contemporary lyrical creations. Among his latest shows are Llanto por Ignacio Sanchez Mejias, Lucia di Lammermoor,. La Désaccordée. Zaïde,. Sumidagawa. In 2008, Michel Rostain staged the new production of Château des Carpathes by Philippe Hersant, at Opéra de Rennes. In 2010, he wrote and performed Sept nouvelles de la douleur, commissioned by the Orchestre de Bretagne for The Seven Last Words of Christ by Joseph Haydn.
La Dame en bleu, music by Francis Régnier, libretto by Michel Rostain, musical tragedy created in 1978 at the Théâtre des Amandiers in Nanterre on the occasion of the Biennale du Théâtre Musical.
La Baraque rouge, jazz-opera, music by Gérard Marais, libretto by Michel Rostain, created at the Festival of Radio-France and Montpellier in 1985.
Bastien et Bastienne, opera by Mozart carried out in 1989 by the workshop "Voix, Instruments et Théâtre" under the direction of Martine Joséphine Thomas. French libretto by Michel Rostain.
Lo sposo deluso, Mozart's unfinished opera, created with the workshop "Voix, Instrument, Théâtre" directed by Michel Rostain and Martine Joséphine Thomas. Reduction for orchestral ensemble by Jean-Claude Pennetier, libretto in French by Michel Rostain.
Jumelles, electro-acoustic opera by James Giroudon and Pierre-Alain Jaffrennou, libretto by Michel Rostainat for the "Festival Musiques en Scènes" of Lyon,
Rossini à domicile, musical theatre, music by Rossini, libretto by Michel Rostain
Piano, play by Michel Rostain created on the Scène Nationale of Macon with Jean-Claude Pennetier, Isabelle Hurtin and Daniel Lecoyer,
Mister Cendron, jazz-opera by Gérard Marais, libretto by Michel Rostain, created at the Grande Halle de la Villette
Petites variations amoureuses et grande fugue, musical theatre by David Ives, translated and directed by Michel Rostain
La Prière du loup, music byEric Salzman, libretto by Michel Rostain and Eric Salzman, created at the Théâtre de Cornouaille - Scène Nationale de Quimper - The Prayer of the Wolf, English adaptation on the occasion of the Music Festival of The Hamptons
La Première fois, impromptu theater and music written by Michel Rostain in 1998 on the occasion of the inauguration of the Theater de Cornouaille in Quimper.
Sextet, musique guerre et paix, lyric poem for Jazz by Gérard Marais, libretto by Philippe Gumplowicz and Michel Rostain, created at the Théâtre de Cornouaille - Scène Nationale of Quimper,
Sept Nouvelles de la douleur, commission from the Orchestre de Bretagne, created at the Opéra de Rennes for the presentation of Die sieben letzten Worte unseres Erlösers am Kreuze by Joseph Haydn
