Oorspronklik: Unchained Melody. Alex North. Unchained Melody composed by Alex North. ISBN M-2015-6788-4. Choir sheet music.
Vertaling: Unchained Melody saamgestel deur Alex North. Koor bladmusiek. Klavierbegeleiding bladmusiek. Gereël deur Gwyn Arch. Gewild, Choral.