A cappella music is specifically group, or solo, singing without instrumental sound, or a piece intended to be performed in this way. It contrasts with cantata, which is accompanied singing. A cappella was originally intended to differentiate between Renaissance polyphony and Baroque concertato style. In the 19th century a renewed interest in Renaissance polyphony coupled with an ignorance of the fact that vocal parts were often doubled by instrumentalists led to the term coming to mean unaccomp...
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