This is a pretty good video. The art is stylized and grows on you as you watch it, at least it did for me. The animation is pretty smooth but some scenes get reused. This music is quite nice. It seems to be inspired by 1800s English folk songs and later in the song it seems to have taken inspiration from Irish folk songs. The instruments themselves are predominantly what you'd expect from 70s Japanese music. It's an overall pretty good and calming experience and I enjoyed looking at the animation with the song. There's also a Hatsune Miku version of this song on NicoNico Douga.