anonymous
Diminutions for viola bastarda on «Ancor che co’l partire» by Cipriano de Rore (Anchor che col Partire Viola Bastarda)
and
Fantasia in Bastart
D-B ms. mus. 114 (olim PL-WRu 114)
The manuscript also contains copies of diminutions for viola bastarda by Riccardo Rognoni, 1592 (see).
Joëlle Morton, Redefining the Viola Bastarda: A Most Spurious Subject, «The Viola da Gamba Society Journal», 8, 2014, pp. 1-64. http://vdgs.org.uk/journal/Vol-08.pdf