Trygve Seim was born in Oslo in 1971, and took up the saxophone at the age of 14. His earliest inspirations were, he says, Jan Garbarek, electric Miles Davis, and ECM's documentation of European improvising. Seim studied jazz at the Trondheim Conservatory. During those studies he met pianist Christian Wallumrod, co-producer of the present disc and an ECM artist in his own right (see “No Birch” ECM 1628) and together they formed the group Airamero, which made Scandinavian tours with Kenny Wheeler and played in Germany with Nils Petter Molvaer. In 1992, Seim, now based back in Oslo, joined the “little big band” Oslo 13 and appears on its 1993 album “Live”; when leader Jon Balke left the group in 1995, Seim and fellow saxophonist Morten Halle became the ensemble's principal composers.
In 1993, Seim co-founded the quartet The Source, a group originally rooted in the free jazz tradition but which has since developed a personal style of its own. The Source has played several concerts in which they are joined by the Cikada String Quartet (the classical ensemble that has appeared on ECM recordings by Bent Sørensen, Annette Peacock, Arild Andersen and Mats Eden). A Source/Cikada album will be issued by ECM in 2001. 1993 was also the year in which Seim launched the Trondheim Kunstorkester, a large ensemble containing many of the players now featured on “Different Rivers”