a quintet
There is no standard collective nouns for 'instrumentalists', however, the collective noun for musicians will work:a band of instrumentalistsan orchestra of instrumentalists
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An octet.
A group of six singers or six instrumentalists.
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mariachi's
manage the bands finances and sorts out the instrumentalists
mariachi's
A chamber group typically consists of a small ensemble of musicians, often ranging from two to around ten instrumentalists. Common configurations include duos, trios, quartets, and quintets, with string quartets (two violins, a viola, and a cello) being particularly popular. The exact number of instrumentalists can vary depending on the specific piece of music being performed and the ensemble's composition. Overall, you would generally expect to find between two to eight instrumentalists in a chamber group.
Duet
A dramatic work in one or more acts, set to music for singers and instrumentalists.
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