[4] Nineteen-year-old Deutscher had ad-libbed the tune during an October 1965 audition at Musikverlag Edition Intro Gebrüder Meisel GmbH by humming the melody and only singing the characteristic chorus line of "Dum-Dum, Dum-dum"; asked by present songwriter Christian Bruhn what he intended to do with it to turn it into a complete song, he replied, "Det machst du!

80,[7][8] and sparking a number of English cover versions by contemporary acts such as The Deejays (under the title "Dum Dum (Marble Breaks and Iron Bends)"),[9] as well as by the two Australian acts Peter Fenton[10] and Toni & Royce (aka Toni McCann and Royce Nicholas),[11] none of which seem to have charted.

After his 1965 hit "Marmor, Stein und Eisen bricht", his career in Germany was in full swing, when it was shaken by a 1967 conviction for public indecency (Erregung öffentlichen Ärgernisses) after he had urinated from a balcony while drunk, in plain view of a group of schoolchildren watching him from street level.

In 1982, a biopic loosely inspired by Deutscher's life was released to German theaters under the title of his greatest hit, Marmor, Stein und Eisen bricht, in which he appeared in a small cameo role.

Deutscher worked with Christopher Evans Ironside, collaborating with him on a project named Masquerade, and on their co-written 1984 hit, "Guardian Angel", which was popular in many countries.

Deutscher would enlist the assistance of two substitute performers from Hamburg, Germany, named Geunter Urban and Ole Olsen.

These two men would dress up in white face paint and tuxedos, and lip sync (mime) to Deutscher's music.

[14] In late 1986, he achieved success with his duo, Mixed Emotions, together with Oliver Simon, and their single "You Want Love (Maria, Maria...)", a collaboration which sparked three more follow-up hit singles in a row by 1987, a TV theme hit in 1988 ("Running Wild", used for an episode of the crime series Eurocops), and by its success finally inspired him to release his first new album under his real name in two decades, 1989's Über Grenzen geh'n (lit.