In early 2005, Kempf joined famous Bosnian garage rock band Zabranjeno Pušenje. He played on three band's studio albums; Hodi da ti čiko nešto da (2006), Muzej revolucije (2009), Radovi na cesti (2013). In late 2006, alongside fellow band members Sejo Sexon, Robert Boldižar, and Branko Trajkov, he joined newly established supergroup Shaderwan Code. In early 2017, Kempf chose to leave Zabranjeno Pušenje.
