Wikipedia
Körslaget is a Swedish entertainment TV program on TV4. The format was developed by Friday TV and based on an idea from Caroline af Ugglas, Heinz Liljedahl and Patrik Hambraeus.
In each season of Körslaget, seven known musicians from Sweden start their own choirs with 20 members in each. Each choir then performs one song in each program, and the audience then votes (either through a telephone call or SMS messaging) on the choir(s) they want to remain in the season. The team/choir with the least number of votes is eliminated in each program until one winning team remains; however, in the first program no team is eliminated. The winning team receives a certain amount of prize money to be donated to something in the city that the choir in question came from.