To sing in a Duet in your fantasy implies parity and concordance. You are dealing with some issue or issue that you have been inconsistent at for quite a while."

To sing in a duet in your dream signifies balance and harmony. You are coming to terms with some problem or issue that you have been at odds at for a long time.

To dream of hearing a duet played, denotes a peaceful and even existence for lovers. No quarrels, as is customary in this sort of thing. Business people carry on a mild rivalry. To musical people, this denotes competition and wrangling for superiority. To hear a duet sung, is unpleasant tidings from the absent; but this will not last, as some new pleasure will displace the unpleasantness.