He worked as chief engineer at [l297483] between 1954-1980 and in 1960 he was one of the first Swedish engineers to do high-quality stereo recordings. Persson left Metronome in 1980 (after its takeover by Warner) to do freelance engineering work. Depending on the studio, his signature in runout can be MS/RP or CR/RP, then use only RP as the ANV.