To add a video for Carl Tausig / Andante (after Beethovens Andante con moto quasi Allegretto from String Quartet Op. 59/3), just enter the video‘s YouTube link:
example) https://www.youtube.com/watch?v=XXXXXXXXXXX
Search YouTube for Carl Tausig / Andante (after Beethovens Andante con moto quasi Allegretto from String Quartet Op. 59/3)