[1] Kartner worked as a promoter and producer at a record label Dureco with Annie de Reuver, with whom he formed Duo X.

Kartner wrote the music for the opening and closing credits on the Japanese cartoon adaptation of the 1990 TV series Moomin and "Ik ben verliefd (Shalalie)", the Dutch entry for the 2010 Eurovision Song Contest.

Also in 1971, his duet with Wilma Landkroon, "Zou het erg zijn, lieve opa" (Would it be bad, dear grandfather?

Other cover versions of The Red Rose Café have been released by Peter Alexander (Germany), Joe Dassin (France), Mireille Mathieu (France), The Fureys (Ireland), Celtic Thunder (Ireland), Engelbert Humperdinck (UK), Audrey Landers (US), André Rieu (Netherlands), Jaromír Mayer (Czech Republic), Kantoři (Czech folk music), Dag Frøland (Norway 1981), Hanne Krogh (Norway 1982) and Demis Roussos.

[7] The album was released in several dozen countries, including France, Germany, Italy, Japan, Spain, and Sweden, and in various different languages.

Subsequently, Kartner released other Smurf-themed albums, again in various countries and languages, such as Ga je mee naar Smurfenland (Dutch) and Vater Abraham im Land der Schlümpfe (German).

[9] His 1976 song, "Het leger der werklozen" (The army of unemployed) portrays the jobless as people who spend the day sitting in pubs, drinking alcohol.

In 2012, he recorded "Beste Koning" (Dear King) and in 2016 "Ik wil mijn gulden terug" (I want the guilder back).