Greece, Portugal, Bosnia-Hercegovina, Serbia, Albania, Moldova, Belarus, Russia and Belgium were all victorious last night. A further ten finalists will be picked from tonight's second semi-final in Norway.
Tom Dice's 'Me and My Guitar' will be Belgium's first entrant to reach the final since 2004.
Malta, FYR Macedonia, Estonia, Latvia, Poland, Finland and Slovakia missed out on a spot in the final. For the first time in the show's history, expert judges determined 50% of the vote.
France, the UK, Germany, Spain and hosts Norway enter the music competition automatically.
Josh Dubovie, 19, is this year's UK representative, performing Pete Waterman and Mike Stock's 'That Sounds Good To Me'.