Henrik Hellstenius (born 1963) studied musicology at the University of Oslo and later composition with Lasse Thoresen at the Norwegian State Academy in Oslo. In 1992-3 he studied with Gérard Grisey at the Conservatoire Superieure in Paris, and he also studied computer-supported composition at IRCAM in Paris.

Hellstenius´ output encompasses a large range of works: chamber music, orchestral works, opera, electroacoustic music and music for theatre, film and ballet. His music is frequently performed in concerts and festivals aorund Europe.

His Opera SERA has been recorded and received the norwegian Edvard Award in 2000. It has been put on stage in Oslo and Warszaw.

Hes second opera ”Opehelia: Death by water Singing” was premiered in Oslo 2006. Hellstenius is also a professor in composition teaching at the Norwegian State Academy of Music in Oslo.