duet
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Music ensembles according to the number of people  | 
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A duet (from the Latin duo 'two' ) is a musical work that is performed by two musicians ( ensemble ) or was composed for this purpose:
- either with really only two participants in a work of chamber music ;
 - or with two (mostly vocal ) soloists accompanied by other instruments, especially an aria with two soloists.
 
While the work or lecture is called a duet , the two musicians or singers are usually called a duo . The group of people is also called a duet less often .
It also happens in the animal kingdom that two partners sing in a duet .
swell
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