Kosmonauci is a Polish boy band with a jazz background that draws on hip hop, drum ‘n bass and improvisation for its musical language. The instrumentation, which includes saxophone, bass, vibraphone and drums, creates the group's unique style, balancing between emotional melodies and polyrhythmic structures. A band born of friendship, the members of Kosmonauci have played together since childhood. March 2024 saw the release of their debut album Sorry, Nie Tu on U Jazz Me.