To add a video for Elizabeth Joy Roe / Grand Scherzo (based on the Finale to Act 1 from Mozarts Così fan tutte, K. 588), just enter the video‘s YouTube link:
example) https://www.youtube.com/watch?v=XXXXXXXXXXX
Search YouTube for Elizabeth Joy Roe / Grand Scherzo (based on the Finale to Act 1 from Mozarts Così fan tutte, K. 588)