Between 1991 and 2012, he was the keyboardist and occasional vocalist of Rosenstolz, a German pop duo that had chart hits in Germany, Austria and Switzerland.

Peter Plate was born on 1 July 1967[1][2] in New Delhi, where his grandfather was a diplomat, and came to Germany at the age of three, spending his childhood first in Hamburg and then in Goslar.

They include French singer Patricia Kaas, for whom he was involved in writing and producing the song "Herz eines Kämpfers" (2005).

Together with Sommer, he worked with the duo to write their singles "Besser geht's nicht" and "36 Grad" (both 2007)[15] and "Rette mich später" (2009).

[16] A further collaboration was with English singer Melanie C, who came to Berlin to record "Let There Be Love" (2011), a cover version of the Rosenstolz hit "Liebe ist alles" (2004).

[4] For their efforts in the fight against HIV and AIDS, they were awarded the Bundesverdienstkreuz (Order of Merit of the Federal Republic of Germany) in 2011.

They released the charity single "Zehn (Für Natascha und Olga)", with proceeds going to support groups in Russia, and also headed a demonstration outside the Russian embassy in Berlin.