And the sons of the singers gathered themselves together
 Such of the Levites that were singers, and their sons that were trained up as such: 
 both out of the plain country round about Jerusalem
 the plain of Jordan by Jericho, and the plain of Saron and Lydda: 
 and from the villages of Netophathi:
 see ( 1 Chronicles 9:16 ) , here they dwelt, when not in their courses, to minister in the temple; but on this public occasion were summoned together.