Concertato

Concertato is a term in early Baroque music referring to either a genre or a style of music in which groups of instruments or voices share a melody, usually in alternation, and almost always over a basso continuo. The term derives from Italian concerto which means "playing together" —hence concertato means "in the style of a concerto." In contemporary usage, the term is almost always used as an adjective, for example "three pieces from the set are in concertato style."
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adj. concerted, planned, devised, arranged by agreement

v. arrange, concert, harmonize, rehearse