Badia, Carlo Agostino
Aria «Sono in traccia del mio bene» for bass (Delio), violetta and basso continuo
in
L'Amazone corsara, overo: l'Alvilda regina de'Goti, dramma in musica
Wien
A-Wn Mus. Hs. 19052, fol. 80v-82
Strümper, Viennese music with viols
The instrument is called violetta, a name Badia uses elsewhere instead of viola da gamba (see the two oratorios of St Ursula). The range of the part is C-f'.
Marc Strümper, Die Viola da gamba am Wiener Kaiserhof, Tutzing, Schneider, 2004, pp. 140-141