To add a video for Johann Christoph Friedrich Bach / Fughetta on H-C-F-B-A-C-H for keyboard, HW 12/14, just enter the video‘s YouTube link:
example) https://www.youtube.com/watch?v=XXXXXXXXXXX
Search YouTube for Johann Christoph Friedrich Bach / Fughetta on H-C-F-B-A-C-H for keyboard, HW 12/14