and both deacons [or Levites] and singers, that is, both they that were under Asaph, and they that were under Heman, and they that were under Jeduthun, their sons and brethren, clothed with white linen clothes, sounded with cymbals and psalteries and harps, and stood at the west coast, or corner, of the altar, and with them were sixscore priests trumping.