His 1990 single "Verdammt, ich lieb' dich" ("Damn, I love you") was a hit in several European countries and spent 16 consecutive weeks at the number 1 spot in the German charts.

After receiving his Abitur, he began his undergraduate studies in the German and English languages as well as Germanistic and Anglistic literatures in Göttingen.

Reim's career began as a songwriter, writing for Bernhard Brink, Roberto Blanco and Tina York.

He played in a rock band called Fallen Dice with Pete Goldenberg and Norbert Preis.

In September 2004, Reim released the single "Vergiß Es (Forget It)" with Bonnie Tyler.

Reim moved to RCA Records in 2016 for the release of his sixteenth album, Phoenix, which peaked at no.