6 Sonatas op. 2 - volume 1: Sonatas in G major, E minor and D major
for 2 violas or flute (violin) and viola
for 2 violas or flute/violin and viola, after the 6 sonatas for flute op.2 (1727)
The two («equal») viola voices correspond to the original flute parts which are octaved downwards. Together with one of the added original voices for flute/violin, several alternative instrumentations are possible.