Nehemiah 12:27-30

Now at the dedication of the wall of Jerusalem they sought out the Levites from all their places in order to bring them to Jerusalem to celebrate the dedication with gladness, with hymns of thanksgiving, and with songs to the accompaniment of cymbals, harps, and lyres. So the sons of the singers gathered together from the district around Jerusalem, and from the villages of the Netophathites, from Beth-gilgal and from the fields of Geba and Azmaveth, for the singers had built villages for themselves around Jerusalem. The priests and the Levites purified themselves; they also purified the people, the gates, and the wall.