Stockhausen - In the Sky I Am Walking (American Indian Songs)
Cardew - Four Principles on Ireland
Léonin - Polyphony
Decius - Allein Gott in der Höh sei Ehr
The connection? No idea!
The Stockhausen is correct, the Leonin I was looking for is the term 'organa'. The other two aren't right.
I can only find two hymns by Decius - Allein Gott in der Höh sei Ehr and O Mensch, bewein (the one used in the St Matthew Passion). The link to polyphony and the Notre Dame school completely eludes me, I'm afraid!
It's not either of those. I think that it's the other surviving hymn by Decius that I'm looking for. It's a setting of the
Sanctus from the mass (the specific title I'm looking for is in Old German).
I'm sure you must be on to something with organum, PW. There don't seem to be any works with 'organum' or 'organa' in their titles but is it that the later composers consciously used some of the Leonin-type organa techniques in their music?
Is there some link with David Jackman, he of 'Organum' and prior to that it Cardew's Scratch Orchestra?
That's not the link I'm afraid. It's rather more cryptic than that...
But I think when you find the Decius it should be easier.
You're looking for a link akin to the last one that I posted.