Rydberg's father is Ethiopian singer Teshome Mitiku; and her mother is Swedish.
In 2009 she competed in Melodifestivalen, the Swedish national selection for Eurovision Song Contest, with the song "You're My World". She advanced directly from her heat; however, she placed ninth in the final. She released her album My World in 2009. According to her website, her new single, "Teardrops" was released to radio stations on 2 June 2009. Her duet with Ákos Dobrády, "Side By Side" (Szerelemre hangolva), was recorded in both Hungarian and English languages and issued the same year.