Jazz club
Yass (jass) is a Polish music style of avant-garde jazz which originated in the late 1980s, that mixes jazz, improvised music, punk rock, and folk. The style began with Avant-Garde Jazz musicians from the Tricity and Bydgoszcz, where the Jazz club "Mózg" became the unofficial 'home venue' for Yass performers, with its own label releasing a number of Yass productions.