Due (It.) (doo-eh)
Two. A due, by two; that is, divide, when marked over a string part in the orchestra; but when over a wind instrument part it means that both of the pair are to play the notes.
Due corde (It.). Two strings. In violin music, means that the note is to be played on the open string and as a stopped note simultaneously. The only notes that may be so played on the violin are:- 2 0 0 0 sometimes signified by writing them as above.
Duet, Duo (Fr.), Duetto (It.). A composition for two voices or instruments or for two performers on the piano or organ.