These are they that waited with their children of the sons of Kohath: Heman a singer, which was the son of Joel, the son of Samuel,

These are the singers - ancient heads among the Levites divided by chambers, for they had to do both day and night.

And David had on him an alb of bysse, and so had the Levites that bare the Ark, and so had the singers, and Chenaniah the ruler of the song and of the singers. And David had moreover upon him an Ephod of linen.