In the town of Kardzhali is held the national festival “Koko rock fest”. The aim of the event is to promote the rock music in its different styles (blues, rhythm and blues, rock and roll, rock, hard rock, heavy metal, country rock, ethno rock, jazz rock and etc.) and to give an opportunity to young rock bands to stand out. The festival is made in a concurs type. It is held in the Regional museum of history – Kurdzhali in the days around the 15th September.