duet

fe’l verb

1. To perform a duet.
2. (of pairs of animals) To communicate (warnings, mating calls, etc.) through song.
3. To perform (sing, play, etc.) as a duet.
4. (of two people) To say at the same time, to chorus.

ot noun

1. A musical composition in two parts, each performed by a single voice (singer, instrument or univoce ensemble).
2. A song composed for and/or performed by a duo.
3. A pair or couple, especially one that is harmonious or elegant.