Under the motto "Wir suchen den heißesten Live-Act Deutschlands" ("We're looking for Germany's hottest live act") Popstars returned with a sixth installment in the summer of 2007, this time searching for Germany's best live performers.

Soost, music producer Dieter Falk, techno veteran Marusha, singer Nina Hagen and singing coach Jane Comerford.

Over the course of several recalls and re-recalls the judges reduced the contestants to a smaller group that immediately travelled to Füssen to get trained in singing, dancing, and fitness.

Considering the contestants for too weak, ProSieben decided to hold auditions in the Netherlands, where a few more dancers and singers were cast.

On the season's finale on 6 December 2007, four of the six were chosen to make the band: Cristobal Moreno, Sascha Salvati, Julian Kasprzik, and Tialda van Slogteren beat out Norman Ramazan and Marcella McCrae – and eventually formed the group Room2012.