The Bundesvision Song Contest is an annual competition created by German TV entertainer Stefan Raab in 2005. For each of the 16 states of Germany a song is chosen by regional radio stations. The songs are performed on live television in order to find the most popular song in the competition. The TV format makes use of premium-priced viewer interactivity, with viewers voting for their favourite songs by phone or SMS. The show is loosely based on the Eurovision Song Contest and its rules aim at promoting German-language music by requiring that at least 50 percent of the lyrics have to be performed in German.