Oorspronkelijk: Classical Favorite Duets, Book 2. On The Beautiful Blue Danube. Piano sheet music. Classical Favorite Duets, Book 2. Piano 4-hands.
Vertaling: Klassieke Favoriete Duets, Boek 2. Piano bladmuziek. Klassieke Favoriete Duets, Boek 2. Made Easy for Piano, 4 Hands. Piano 4-handen.