Oorspronklik: Wagner Opera Vocal Scores. Version 2.0. Richard Wagner. Voice sheet music. Wagner Opera Vocal Scores. Version 2.0. 2 CD-ROMs. 1813-1883.
Vertaling: Wagner Opera Vocal tellings. Tristan en Isolde, Wet II, Deel 2 - O sink 'down nag. Weergawe 2.0. Voice bladmusiek. Weergawe 2.0.