Frans Bak (born 7 February 1958 Copenhagen, Denmark)[1][2] is a Danish composer, choral conductor, saxophonist, and pianist.

[1] Bak was a member of the bands Blast, Buztop, Santa Cruz, Det Glatte Lag, and Jazzgruppe 90.

[1] He wrote the score for the Danish television series Forbrydelsen and American remake, The Killing on AMC.

He worked on Lilyhammer on NRK1/Netflix starring Steven Van Zandt, the British adaption of the Ruth Rendell novel Thirteen Steps Down and in 2015 the first series of Doctor Foster for the BBC.

[5] He discovered the piano he learned to play on as a child in a Copenhagen music shop window for sale, and bought it.