After the 1979 third album Læn Dem Ikke Ud, the group reorganized. Lundén, Klemann and Miller was joined by John Teglgaard, Jeppe Reipurth, and Knut Henriksen. In 1980 the reformed Bifrost released an album of English language songs performing under alias Crazy Canary. In 1981 and 1982 followed the band's fourth and fifth album that was the fastest selling albums for the group. Then female lead vocalist Ida Kleeman left and was replaced by Pia Cohn in 1983 but by then the group's popularity was fastly fading. The group folded in 1987 after the release of a final album; by then the lineup was reduced to the duo of Lundén and Cohn surrounded by a number of studio musicians.
In 1997 Lundén and Cohn recorded some new songs that were included on the retrospective compilation Hjerte Til Salg.