Born in the small town of Kristianstad, Sweden, as the daughter of poet Eva Ström, Karin relocated to London in 1997 where she started to record homemade demos, sung in English with a classic singer/songwriter sound.

In June 2007, the album Ny musik för landssorg (New Music For National Grief & Mourning) was released, where Karin participates with the song Ordlös (Wordless).

The same year she released a remix for Shout Out Louds' single Fall Hard and went on a small tour in Sweden, hitting Gothenburg, Malmö, Växjö, Eskilstuna and Stockholm.

A chance encounter on a plane across the Atlantic led to the introduction of Brooklyn-based producer Mark Ephraim (Joan as a Policewoman, Sophia Knapp, A Nighthawk).

Karin is a fashion, lifestyle and design journalist in her native Sweden, writing for a number of Swedish monthlies such as Elle, Scanorama, Plaza Magazine and many others.

In 2010, Karin started the miniature publishing company Aglaktuq together with her sister author Anna Vogel and graphic designer Agnes Stenqvist.

The company's first titles Våld (Violence) by Karin ström and Den ryska sjalen (The Russian shawl) by Anna Vogel was released the same year.