Originale: Masterwork Classics Duets, Level 7. Waltz in B Major, Op. 39, No. 1. Waltz in E Major, Op. 39, No. 2. The Swing.
Traduzione: Masterwork Classics Duets, Livello 7. Valzer in B maggiore op. 39, No. 1. Valzer in mi maggiore, op. 39, No. 2. Intermedio.