Bulletin of the American Academy of Arts and Sciences Vol. 33, No. 3, Dec., 1979 Gregorian Chant as a Fundamentum of West... The following communication was presented as part of "An Evening of ...
The original melody is likely a variant of a medieval Gregorian chant. The text was written in 1328 by Henrich Suso, a priest who claimed to have a vision in which angels danced in celebration of ...