Rasmus Viberg (born April 2, 1990 in Sweden) is a Swedish singer. Viberg has been doing music throughout his life. His first band was called Oldschool and he started in high school with some friends. Viberg was also in the group Malmo City Rollerz in which they took part in music competition to create a song for the Malmö City Tunnel opening in 2010. They won with the song "?". In 2011, Viberg competed in Melodifestivalen 2011 with the song "Social Butterfly" in the first round of Luleå on 5 February.