Rasmussen is the stage name of Danish singer and actor Jonas Flodager Rasmussen. He works as a teacher at both the School of Performing Arts at Viborg Cultural School and Aarhus Theatre Learning.
He also is the lead singer and frontman of 1980s cover band Hair Metal Heroes, which performs covers of songs by artists such as Elton John, ABBA, and Rugsted & Kreutzfeldt. He has also acted in stage productions of Hairspray, Rent and West Side Story.
He was selected to represent his home country at the Eurovision Song Contest 2018 in Lisbon with the song "Higher Ground", which competed in the second semi-final and qualified for the final, where it finished in 9th place with 226 points.
He returned for the 2019 Contest in Tel Aviv as the Danish voting spokesperson.