Torstein Aagaard-Nilsen (born 11 January 1964, Oslo) is a Norwegian contemporary composer.
In 1992 and 1993, he arranged and composed for the Forsvarets Stabsmusikkorps Vestlandet - Norwegian Army Band, Bergen (NABB), writing, among other works, Arctic Landscape.
Works that exemplify Aagard-Nilsen's focus on narrative and visual aspects in a nearly impulsive form include Fabula I and Fabula II (1996), Sinfonietta (1998) and The Season of Blue Lights (2008) commissioned by BIT20 Ensemble.
2014 saw his orchestral work Boreas Blæs (2014) premiered by the Norwegian Arctic Philharmonic Orchestra at the opening ceremony of Stormen, Bodø's concert hall.
[3] In 2016, Aagard-Nilsen received the Norwegian Music Publishing Association's Annual Award for his work Dirty Dancing, commissioned and premiered by the Christiania Blåseensemble in 2015.