To add a video for Otfried Büsing / Fantasie and Fugue (after Bachs BWV 1001 & BWV 539), just enter the video‘s YouTube link:
example) https://www.youtube.com/watch?v=XXXXXXXXXXX
Search YouTube for Otfried Büsing / Fantasie and Fugue (after Bachs BWV 1001 & BWV 539)