Gregorian / Michael Praetorius / [anonymous]

Comprised of:

1. Gregorian Group, Began: 1991 in Germany , Ended: 1991 in Germany
2. Michael Praetorius Male Person, Born: 15 Feb 1571 in Creuzburg , Died: 15 Feb 1621 in Wolfenbüttel
3. [anonymous] Not applicable Other, Began: in