DUET is validvalid

to perform a musical composition for two [v DUETED, DUETING, DUETS, DUETTED, DUETTING]

2,144 of 196,601 in NWL2023·also valid in CSW24

a musical performance by two people, also DUETT, DUETTO [n -S] / to perform a duet [v DUETED or DUETTED, DUETING or DUETTING, DUETS]