Hanne Margrethe Fredriksen Sørvaag is a Norwegian singer-songwriter. For many years she was based in Stockholm, Sweden, mostly composing for other artists via Universal. Today she works from Oslo, Norway and has a career as a recording and performing artist.

"Disappear" is a song recorded by all-female German pop group No Angels, taken from Destiny Reloaded (2008), the reissue of their fourth studio album. It was written by Norwegian singer-songwriter Hanne Sørvaag along with Danish musicians Remee and Thomas Troelsen, the latter of which also handled production on the track. A mid-paced pop song that is built on a ticking clock sample, the song is influenced by elements of Europop and synthpop. Its instrumentation consists essentially of synthesizers and keyboards. Lyrically, it finds the protagonist thinking deeply over her relationship with her love interest from whom she parted; however, she still pines for him and feels self-conscious for doing so.