Medieval Songs for Easter

Here is a YouTube playlist of medieval music for Easter. (It's just that time of year.) I tried to pick the nicest recordings, and ones that seem actually to be medieval scores or arrangements but I don't claim expertise in this area - this is purely recreational.
The list begins with Christ ist erstanden.It's a German vernacular liturgical song (see the German Wikipedia page). It's performed by the Quire Cleveland and I was really impressed by the quality of the recording, which was done in 2011, and the singing is very lovely. Not sure why it has only 2800 views; it deserves at least ten times that many. Pass it on.