Tommy Körberg - Julen är här - 1989	Sissel sang a duet with Swedish singer Tommy Körberg on two songs on his 1989 Christmas album. She sang with him on the title track, "Julen är här," and on "Låt Julen förkunna." The latter song is a Swedish translation of the John Lennon / Yoko Ono song "Happy Xmas / War Is Over."