Benjamin starts at the conservatory of Toulouse where he studies jazz, classical saxophone, and electroacoustic composition. In 2005 he moves to the Superior Conservatory in Paris to study jazz and improvisation with Riccardo Del Fra, Glenn Ferris and Francois Théberge.Besides his instrumental activities he writes music for different bands (from trio to symphonic orchestra). His approach is influenced by contemporary music, jazz and electric music (pop, rock, metal).
He plays with different bands in France such as Trio DDJ, Benjamin Dousteyssier septet, Nux, Apax, Paul Lay « into the lines » trio, « Au cœur », Benjamin Dousteyssier quartet, Actuum. He received many prizes as a saxophone player and composer: « La Défense jazz competition » with DDJ and Paul Lay trio, « the keep an eye jazz award » in Amsterdam with Actuum and a 4th soloist prize at the international competition in Friburg.