To add a video for Johann Schobert / Sonata en quatuor for harpsichord, 2 violins & cello in F minor, Op. 7/2, just enter the video‘s YouTube link:
example) https://www.youtube.com/watch?v=XXXXXXXXXXX
Search YouTube for Johann Schobert / Sonata en quatuor for harpsichord, 2 violins & cello in F minor, Op. 7/2