Wikipedia
In music rondellus is the formalized interchange of parts or voices according to a scheme, often used in English conducti and frequently in English motets of the late thirteenth and early fourteenth centuries, but never used for an entire piece . For example:
A B C D E F
C A B F D E
B C A E F D
where the italicized letters represent music with text and the other letters are melismatic .
Rondellus is an Estonian musical ensemble. After recording several albums of early music on period instruments they recorded Sabbatum: Medieval Tribute to Black Sabbath in the same style having translated the vocals to Latin. ("War Pigs" = "Verres Militares") Instrumentation: vocals, hurdy-gurdy, organistrum, lute, percussion, fiddle, and harp.
Though the American Classical League claims, "Metal fans will undoubtedly appreciate Sabbatum," AllMusic claims, "Black Sabbath fans are unlikely to dig music as extremely mellow as this, though the album could serve as okay background music for yoga or a massage."
Albums:
- Rondellus. Secular Music in France from the XIVth-XVth Century (1995)
- Sanctum Rosarium (1995)
- Carmina Sanctorum (1998)
- Sabbatum (2003)
- Adoratur rosa (2009)