This is an interesting twist. In this fan-created video, the video is actually dubbed over the music.
The song is Angel, by Massive Attack and the video is a clip from the 1932 film Vampyr.
I was listening to internet radio while working and this song came on. I’ve heard it before and it fit my mood perfectly. Did a search for the video and found the YouTube link. Thank goodness for internet radio. Thank goodness for YouTube.