To add a video for Edmund Rubbra / Meditations on a Byzantine Hymn O Quando in Cruce for 2 violas, Op. 117a, just enter the video‘s YouTube link:
example) https://www.youtube.com/watch?v=XXXXXXXXXXX
Search YouTube for Edmund Rubbra / Meditations on a Byzantine Hymn O Quando in Cruce for 2 violas, Op. 117a