 Kristín Anna was a member of the band múm from 1998 until 2006.During that time the band released three full-length albums, "Yesterday Was Dramatic – Today Is OK", "Finally We Are No One", and "Summer Make Good"

She was accordion player in a Bulgarian goth punk band Stórsveit Nix Noltes in 2003–2010.Those years she also appeared on recordings and performed live with the bands Mice Parade and Slowblow.