1 Chronicles 15:16

16David also commanded the chiefs of the Levites to appoint their brothers as the singers who should play loudly on amusical instruments, on harps and lyres and cymbals, to raise sounds of joy.

1 Chronicles 15:27

27David was clothed with a robe of fine linen, as also were all the Levites who were carrying the ark, and the singers and Chenaniah the leader of the music of the singers. And David wore a linen ephod.
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