To add a video for Simon Mayr / Salve Regina, for basso concertante, soprano, alto, bass & orchestra in F major (I-BGc 307/1), just enter the video‘s YouTube link:
example) https://www.youtube.com/watch?v=XXXXXXXXXXX
Search YouTube for Simon Mayr / Salve Regina, for basso concertante, soprano, alto, bass & orchestra in F major (I-BGc 307/1)