I'll see your Danses Anciennes De Hongrie Et De Transylvanie (which is indeed a stunning piece of work) and raise you a Roman de Fauvel, which remains my personal Clemencic favourite.

Another essential : Guillaume de Machaut: La Messe de Nostre Dame - recorded in 1999!

Must have been around 1972 I my first taste of it too, although I was eleven at the time, playing percussion in a school concert of early carols c/o Mr Marshall who had a folk / experimental / early music thing going on. A crucial epiphany which opened my ears to a lot of stuff from avant-garde musique concrete to the Cantigas de Santa Maria and all points beyong and between. Like many people, I got into the Clemencic Consort via their Carmina Burana albums which I cherish & play to this day.

And whilst we're on The Clems - what about Atrium Musicae de Madrid? Though of course (Rene Zosso notwithstanding) my real EM hero is Jordi Savall whose Alia Vox label is a constant source of pure joy to me.