Kruno Jošt attended the Art Academy Zagreb (1993/94–1996/97) and the Gerrit Rietvield Kunst Akademie, Amsterdam (1997/98–1999/2000). He is the founder of the Urban Culture and Education organization. Since 2000, he has been developing the GentleJunk Co. collective; since 2005, he has been a member of the IL.MURO.DEL.RUMUORE / NOISE.WALL performance group. Since October 2006, he has been contributing to Impromondays improvised music sessions in Zagreb.