Her work has moved from "fusion" and "chamber jazz" in the 1980s and 1990s, to improvisational "new" musical forms in the mid-1990s until today.

The last 15 years have her work mainly been concentrated on the genre of free improvisation music, both as a performer and as composer.

[1] Endresen studied English and anthropology and lived in the UK for a period until 1976, before settling in Oslo, where she started her artistic career.

With Eberson, she made a series of musically strong albums at the intersection between jazz and rock that were highly popular and acclaimed by a growing audience.

[1][2] Endresen and Stian Westerhus have been followed by new experimental Norwegian musicians like Natalie Sandtorv and Torgeir Standal in The Jist duo.