Norway's central bank has made a comedy style rap music video to mark the launch of a new series of maritime-themed bank notes. The video features Norway's central bank governor and has become a viral hit in the country. The promotion is a remake of a 1980s comedy skit. It's a light-hearted attempt at educating Norwegians about the safety features in their new bills. The 100 & 200 Norwegian crowns will be released on May 30.