OSLO, NORWAY - MAY 22: Didrik Solli-Tangen of Norway performs at the open rehearsal at the Telenor Arena on May 22, 2010 in Oslo, Norway. In all, 39 countries will take part in the 55th annual Eurovision Song Contest. Semi-finals are scheduled to take place on May 25-27, with the final being held on May 29, 2010. on May 22, 2010 in Oslo, Norway. (Photo by Ragnar Singsaas/WireImage)