Original: Six Duos, Op. 9. Six Duos, Op. 9 composed by Felix-Jean Prot. In the keys of E-flat, C, G, A, D, F. Classical. For 2 violas.
Traducció: Six Duos, op. 9. Sis Duos, op. 9 composta per Felix Jean-Prot. Full Viola música. Editat per Kenneth Martinson. Per a 2 violes. de 6.