To add a video for Adolfo Fumagalli / La Roche du Diable: Étude de bravoure, Op. 100/17 (from École moderne du pianiste), just enter the video‘s YouTube link:
example) https://www.youtube.com/watch?v=XXXXXXXXXXX
Search YouTube for Adolfo Fumagalli / La Roche du Diable: Étude de bravoure, Op. 100/17 (from École moderne du pianiste)