Co-founder of German production music label Sonoton Music with wife Rotheide Narholz.
Between 1958 and 1965 he wrote pop songs for artists such as Petula Clark, Heidi Brühl, Bill Ramsey and film scores for various German feature films and TV series.
Narholz founded the record label Pro Viva, which is dedicated to contemporary classical music of living composers.
He composed and produced Easy Listening albums for Sonoton and Intersound with artists such as Billy May, Horst Jankowski, Nelson Riddle, Les Brown, Ted Heath, Acker Bilk, Xavier Cugat, Geoff Bastow, and Franck Pourcel.
Between 1970 and 1980 Narholz arranged, produced and conducted numerous LPs with large string orchestra under his pseudonym Norman Candler for Decca Records / Telefunken, Germany and King Records, Tokyo.