Jónsi is an Icelandic singer. His full name is Jón Jósep Snæbjörnsson, which is good to know as another Jónsi, the singer of Sigur Rós, is also a famous singer in Iceland. This Jónsi, however, played in a band called Í svörtum fötum. The band was active since 1999. As a solo singer, Jónsi participated in the Eurovision Song Contest in 2004. He returned to Eurovision in 2012, but now in a duet with Greta Salóme.