It was a part of their duty to sing and play for the royal delectation; and this task, according to one author, they had to perform during the whole of each night.

It is a more probable statement that they entertained the king and queen with music while they dined, one of them leading, and the others singing and playing in concert.
The Gynaeceum--in the Susa palace, at any rate--was a building distinct from the general edifice, separated from the "king's house" by a court.
It was itself composed of at least three sets of apartments--viz.
apartments for the virgins who had not yet gone into the king, apartments for the concubines, and apartments for the Queen-Consort and the other wives.

These different portions were under the supervision of different persons.

Two eunuchs of distinction had the charge respectively of the "first" and of the "second house of the women." The Queen-Consort was, at any rate nominally, paramount in the third, her authority extending over all its inmates, male and female.
Sometimes there was in the Gynaeceum a personage even more exalted than any which have as yet been mentioned.

The mother of the reigning prince, if she outlived his father, held a position at the Court of her son beyond that even of his Chief Wife.