What traditional celebration for Norwegian high school students has an official song by Swedish musician, Basshunter?
Boten Anna: "Boten Anna" ("Anna the Bot") is a song by Swedish eurodance musician Basshunter, which appears on his first studio album, "LOL <(^^,)>". Boten Anna:  The song topped hit charts and, on 3 May 2006, was named Norway's official Russ-song of the year. Russefeiring: The russefeiring (English: ""russ" celebration" ) is a traditional celebration for Norwegian high school students in their final spring semester.
russefeiring