Thoresen was winner of the 2010 Nordic Council Music Prize for his work Opus 42, which consists of four pieces written for the vocal group Nordic Voices.
2010 sai Thoresen Põhjamaade Nõukogu muusikaauhinna oma teose "Opus 42" eest, mis koosneb vokaalrühma Nordic Voices jaoks kirjutatud neljast osast.