Machaut Kyrie appears on Youtube

I've been wanting to link this for years but it only now appears on Youtube. It is Guillaume de Machaut's Kyrie from Messe de Nostre Dame, which is popularly called the first full-scale, multi-part composition, probably written in the 1370s. It is truly dazzling, and not entirely unapproachable, though it probably requires professionals. Here is the sheet music.

Enjoy!