To add a video for Hugi Guðmundsson / Dýr fæðingin Drottins vors (The Blessed Birth of Our Lord), for chorus, just enter the video‘s YouTube link:
example) https://www.youtube.com/watch?v=XXXXXXXXXXX
Search YouTube for Hugi Guðmundsson / Dýr fæðingin Drottins vors (The Blessed Birth of Our Lord), for chorus