Kjetil Traavik Møster (born 17 June 1976) is a Norwegian jazz musician (tenor and soprano saxophones, clarinet and bass clarinet) and composer, known from bands like The Core, Ultralyd, Brat, Zanussi 5, and performance with Chick Corea at Moldejazz 2000, later released on CD.

[2] He later attended the Jazz program at Trondheim Musikkonservatorium (1998–2001), where he established the trio "Möster", with Steinar Raknes and Tor Haugerud.

Møster also participated in Espen Aalberg's "The Core" on several occasions and records, as well as the bands "Gibrish" and "Brat" .

[1] He is also a member of the Norwegian electronic rock band Datarock, where he plays saxophone, percussion, keyboards and does some vocals.

This time he is joined by guitarist and vocalist of Motorpsycho, Hans Magnus Ryan aka Snah, bassist of Elephant9 and Bigbang, bass player Nikolai Hængsle of BigBang and The National Bank; and the ubiquitous drummer of Motorpsycho and Grand General, Kenneth Kapstad.