Swedish singer and composer, born 1975 in Nederluleå parish.

She co-wrote the song Walking On Air featured on Katy Perry's album Prism. She sings the song Stupid in the soundtrack to Smala Sussie and Always on My Mind in SJ's advertising campaign Discover Sweden and also Too High in one of Glocalnet's commercials. She also appears on the songs Vy från ett luftslott and Generation ex on the band Kent's album Tillbaka till samtiden. At Kent's two concerts in Baltiska hallen in Malmö on March 22 and 23, 2008, Leierth was present and performed the song live together with Kent.

Played as supporting act during Kent's spring tour 25/2-30/3 2010.

She also sang in the band Starlet, which later changed its name to Dead Starlet.