Quartette
From BiblePortal Wikipedia
Webster's Dictionary [1]
(1): ( n.) A stanza of four lines.
(2): ( n.) A composition in four parts, each performed by a single voice or instrument.
(3): ( n.) The set of four person who perform a piece of music in four parts.
The Nuttall Encyclopedia [2]
A musical piece in four parts, or for four voices or instruments.
