To add a video for François de Fossa / Grand Duo for 2 guitars (after Haydns String Quartet, Op. 2/2, H. 3:8), just enter the video‘s YouTube link:
example) https://www.youtube.com/watch?v=XXXXXXXXXXX
Search YouTube for François de Fossa / Grand Duo for 2 guitars (after Haydns String Quartet, Op. 2/2, H. 3:8)