Kalle Moberg (b. 1994) is best known in Norway within classical and contemporary music and for his former position as kapellmeister at the Royal Palace in Oslo.

After leaving Norway in 2017 to continue music studies in Bern, Switzerland, Kalle started to excel in improvised music and jazz. His engagement in the scene of improvised music escalated dramatically with the inclusion in Norwegian drummer Paal Nilssen-Love's band Large Unit in 2017. Since then several new constellations and cooperations have been formed, including a trio with Paul Lytton and Phillip Wachsmann. Collaborations with Jim O'Rourke led to O'Rourke recording and producing Kalle's first solo acoustic accordion album entitled The Tokyo Sessions Volume 1: Unheard-of (January 2020).

Kalle is lately reaping recognition for his technique-centric work vastly expanding upon the preexisting perceived acoustic possibilities of the accordion - especially his work with extreme bending techniques, multiphonics and microtonality.