The acoustic group "Kontra-Kvartet" is an ethnic group from Maribor, which has been performing rich traditional Jewish klezmer music for 10 years all over Slovenia and abroad. Kontra-Kvartet is one of the rare groups in Slovenia that plays this type of music. They try to be authentic, as evidenced by their many performances in synagogues, museums and various ceremonies around Slovenia. They performed at the biggest klezmer music festival in Tzfat in Israel, Echos Festival Gorizia in Italy, Zagreb, Sarajevo, Osijek, Novi Sad, Budva, Austria... The experienced musicians who make up the band are: Daniel Marinič (accordion), Prof. Vesna Čobal (violin), Petar Marić (guitar), Branko Smrtnik (double bass) and Domen Marn (clarinet).