A song composed for and/or performed by a duo.
A musical composition in two parts, each performed by a single voice (singer, instrument or univoce ensemble).
A pair or couple, especially one that is harmonious or elegant.
To perform (sing, play, etc.) as a duet.
(of two people) To say at the same time, to chorus.
To perform a duet.
To communicate (warnings, mating calls, etc.) through song.
The official song of a constituent state of a country.
The official song of a nation or sovereign state, generally of a patriotic nature and played at events to celebrate or honor said state.