OT-HISTORY.filter - bes psalm-singers:

bes@2Chronicles:29:28 @ And all the congregation worshipped, and the psalm-singers were singing, and the trumpets sounding, until the whole-burnt-sacrifice had been (note:)Gr. completed(:note) completely offered.

bes@2Chronicles:35:15 @ And the sons of Asaph the psalm-singers were at their post according to the commands of David, and Asaph, and Æman, and Idithom, the prophets of the king: also, the chiefs and the porters of the several gates; —it was not for them to stir from the service of the holy things, for their brethren the Levites prepared for them.