Kristín Anna Valtýsdóttir, also known as Kría Brekkan, is an Icelandic vocalist and classically trained multi-instrumentalist. She is best known as a former frontwoman of múm, and later on for collaborating with former husband David Portner as Avey Tare & Kría Brekkan.

Múm is an Icelandic indietronica band whose music is characterized by soft vocals, electronic glitch beats and effects, and a variety of traditional and unconventional instruments.