Nehemiah 12:27-31

And at the dedication of the wall of Jerusalem they sought the Levites in all their places, to bring them to Jerusalem to celebrate the dedication with gladness, with thanksgivings and with singing, with cymbals, harps, and lyres. And the sons of the singers gathered together from the district surrounding Jerusalem and from the villages of the Netophathites; also from Beth-gilgal and from the region of Geba and Azmaveth, for the singers had built for themselves villages around Jerusalem. And the priests and the Levites purified themselves, and they purified the people and the gates and the wall. Then I brought the leaders of Judah up onto the wall and appointed two great choirs that gave thanks. One went to the south on the wall to the Dung Gate.