In liturgical music, the right side of a church choir where the cantor traditionally sits.
From Latin 'cantoris,' the genitive form of 'cantor' meaning 'of the singer.' In Latin, this case was used to show possession, so 'cantoris' literally means 'of the cantor's side' in church architecture and musical arrangement.
Church choirs are literally split in half—one side is 'cantoris' (cantor's side) and the opposite is 'decani' (dean's side), and they sing back-and-forth to each other like a musical conversation!
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