Original: Tchaikovsky, Piotr Ilitch. The Nutcracker. ballet. Op.71. Tchaikovsky, Piotr Ilitch. Orchestra, Voice. Act I, No.1. Act I, No.2.
Traducción: Orquestra, Voz. O Quebra-Nozes. Contents, Instrumentation, and Overture. Ato I, n º 1. The Christmas Tree. Ato I, No.2.