Kretz started making music in the 80´s. His first audience was the computer kids on the Comondore 64 scene. Since that era he have released tracks for the Atari ST and Amiga 500 users and done remixes for record companies . The analog sound has always been a tool and a way of musical expression for Kretz. - He did his first song and waveforms when he was 12 or 13 years old. In that time there were no visual waveform tools available, only the machinecode monitor on the C64.