Hammer, Franz Xaver
Sonatta a Viola di Gamba Da me Xavjer Hammer 786 in D major
The manuscript consists of a part for viol, a «basso» part (both autograph) and a second and more flourished bass part (written by a different copyist) which is most probably for violoncello. It can be discussed whether the two bass parts are to be played together or are intended as alternatives.
Fred Flassig, Die solistische Gambenmusik in Deutschland im 18. Jahrhundert, Göttingen, Cuvillier Verlag, 1998