Marius Bear is originally from Appenzell.[2] He has lived in Australia for a period and holds both Swiss and Australian citizenship.[3] He studied to be a construction mechanic and has been active as a musician since 2016,[4] studying music production at the British and Irish Modern Music Institute.[5] He began his career as a street musician in his native Switzerland, as well as in Germany.[4]
He released his debut EP, Sanity, in 2018.[5] His first album, Not Loud Enough, was released in 2019.[5]
In March 2022, it was announced that Marius Bear would represent Switzerland in the Eurovision Song Contest 2022, with the song "Boys Do Cry".[1] The song qualified from the first semi final[6] and finished 17th with 78 points, all of which came from the jury vote.[7] In an interview after the contest, he said that he would consider representing Switzerland at Eurovision in the future.[8]
In October 2022, he released the single Waiting For Love, which he revealed was almost selected as his song for Eurovision.[9]