His first songs "It's cool man" and "Geierwally" have sold more than a million copies.
Steiner was awarded with a "Golden CD" in Switzerland as well as in Germany.
Steiner appeared in commercials of "Milka" (a milk chocolate producer), where he played man who is an old mountain dweller, but who is "cool" anyway.
The song, which could be classified "dance" or "disco", began with Steiner saying "Ah - ein Stadtmensch .... / Sie glauben wohl auch, dass wir hier oben etwas altmodisch sind .... / Aber Vorsicht: It's cool man!"
When he celebrated his 90th birthday in 2007, he received congratulations from United Nations Special Adviser Adolf Ogi and the former boxer Stefan Angehrn.