Original: Alfred's MusicTech Series, Book 1. Sharps, Flats, and Naturals. Playing Keyboard. Tom Rudolph. Organ sheet music. Piano sheet music.
Traducción: MusicTech Series de Alfred, Livro 1. Que joga o teclado. Partituras de Órgãos. Partituras de piano. MusicTech Series de Alfred, Livro 1.