HATI is an audio project based on the sound of ethnic instruments from all over the world, as well as hand-made instruments or found objects. HATI forms a link between a personal interest in improvised and acoustic music with ritual and meditation. They have performed many times in Poland, Germany, Spain, Netherlands, Belgium, Ireland, England, Denmark and France. The band was founded in 2001 by Rafal Iwanski and Dariusz Wojtas. Nowadays HATI performs as a duo: Rafal Iwanski and Rafal Kolacki, ocasionally with other sound and visual artists. Live cooperation with (among others): Z’EV (+ full length album, 2006), PAS (+ full length album, 2011), John Zorn, Sławomir Ciesielski (ex Republika), Andrzej Przybielski, PURE, Robert Curgenven, Raymond Salvatore Harmon (video). R. Iwański and R. Kołacki are also the organizers of CoCArt Music Festival in Torun, in cooperation with the Centre of Contemporary Art Znaki Czasu.