
Duo I. Perfidia sopra Ut re mi fa sol la a due canti

| Giamberti (1657), 1: DVO I. Perfidia sopra Vt, re, mi, fa, sol, la. Due Canti. | The duo is based on the solmization obbligo Ut re mi fa sol la (hexachord). |
| Bornstein, Giamberti | Complete modern edition of Giamberti's duo collection. |
| Bornstein, Italian Duos | A study of the Italian duo throughout the Renaissance and the Baroque. |
| Thomas, Giamberti | Complete modern edition of Giamberti's duo collection. |
| Solmization obbligo Ut re mi fa sol la (hexachord). | For more information, see Bornstein, Italian Duos, vol. I, p. 166-69, vol. II, p. 430-31 and vol. III, p. 106-07; Bornstein, «Solm I» and Bornstein, «Solm II». |