The Rondo from Mozart’s Divertimento IV KV 439b, arranged to enable the piece to be performed by various combinations of violin, viola and cello. The PDF contains parts for both violin and viola trio, and a separate part for cello, doubling that of the violin/viola III parts. Click here to listen to a recording of the violin trio version of the piece. Use the YouTube link to view & listen to the version for string trio.
Possible permutations -
2 Vln & Vla
Vln & 2 Vla
String Trio - Vln, Vla & Vc, 2 Vln & Vc &
2 Vla & Vc