Piano-Duet «Fantasy» f-minor, D 940, arranged for Transverse Flute, Violin and Viola or 2 Violinen and Viola
Composed in the year of Schubert's death 1828 https://music-learning.net/work-info/14/Schubert%20F./piano-duet-fantasy-f-minor-d-940-arranged-for-transverse-flute-violin-and-viola-or-2-violinen-and-viola