1 Chronicles 9:33
Those who were musicians, the heads of Levite families, stayed in the temple chambers and were exempt from other duties because they were on duty day and night.

2 Chronicles 8:14
In keeping with the ordinances of his father David, Solomon appointed the divisions of the priests over their service, and the Levites for their duties to offer praise and to minister before the priests according to the daily requirement. He also appointed gatekeepers by their divisions at each gate, for this had been the command of David, the man of God.

1 Chronicles 25:1
Additionally, David and the commanders of the army set apart some of the sons of Asaph, Heman, and Jeduthun to prophesy with the accompaniment of lyres, harps, and cymbals. The following is the list of the men who performed this service:

1 Chronicles 23:30-31
They were also to stand every morning to give thanks and praise to the LORD, and likewise in the evening. / Whenever burnt offerings were presented to the LORD on the Sabbaths, New Moons, and appointed feasts, they were to serve regularly before the LORD in the numbers prescribed for them.

1 Chronicles 16:4-6
David appointed some of the Levites to minister before the ark of the LORD, to celebrate, to give thanks, and to praise the LORD, the God of Israel. / Asaph was the chief, Zechariah was second, then Jeiel, Shemiramoth, Jehiel, Mattithiah, Eliab, Benaiah, Obed-edom, and Jeiel. They were to play the harps and lyres, while Asaph sounded the cymbals / and the priests Benaiah and Jahaziel blew the trumpets regularly before the ark of the covenant of God.

2 Chronicles 31:2
Hezekiah reestablished the divisions of the priests and Levites—each of them according to their duties as priests or Levites—for the burnt offerings and peace offerings, for ministry, for giving thanks, and for singing praises at the gates of the LORD’s dwelling.

1 Chronicles 6:31-32
These are the men David put in charge of the music in the house of the LORD after the ark rested there. / They ministered with song before the tabernacle, the Tent of Meeting, until Solomon built the house of the LORD in Jerusalem. And they performed their duties according to the regulations given them.

1 Chronicles 9:22
The number of those chosen to be gatekeepers at the thresholds was 212. They were registered by genealogy in their villages. David and Samuel the seer had appointed them to their positions of trust.

2 Chronicles 29:25-30
Hezekiah stationed the Levites in the house of the LORD with cymbals, harps, and lyres according to the command of David, of Gad the king’s seer, and of Nathan the prophet. For the command had come from the LORD through His prophets. / The Levites stood with the instruments of David, and the priests with the trumpets. / And Hezekiah ordered that the burnt offering be sacrificed on the altar. When the burnt offering began, the song of the LORD and the trumpets began as well, accompanied by the instruments of David king of Israel. ...

1 Chronicles 23:5
4,000 are to be gatekeepers, and 4,000 are to praise the LORD with the instruments I have made for giving praise.”

1 Chronicles 15:16-22
David also told the leaders of the Levites to appoint their relatives as singers to lift up their voices with joy, accompanied by musical instruments—harps, lyres, and cymbals. / So the Levites appointed Heman son of Joel; from his brothers, Asaph son of Berechiah; from their brothers the Merarites, Ethan son of Kushaiah; / and with them their brothers next in rank: Zechariah, Jaaziel, Shemiramoth, Jehiel, Unni, Eliab, Benaiah, Maaseiah, Mattithiah, Eliphelehu, Mikneiah, and the gatekeepers Obed-edom and Jeiel. ...

1 Chronicles 25:6-7
All these were under the direction of their fathers for the music of the house of the LORD with cymbals, harps, and lyres, for the service of the house of God. Asaph, Jeduthun, and Heman were under the direction of the king. / Together with their relatives, who were all trained and skillful in the songs of the LORD, they numbered 288.

1 Chronicles 16:37-42
So David left Asaph and his associates there before the ark of the covenant of the LORD, to minister there regularly according to the daily requirements, / along with Obed-edom and his sixty-eight relatives. Obed-edom son of Jeduthun, and also Hosah, were to be gatekeepers. / And David left Zadok the priest and his fellow priests before the tabernacle of the LORD at the high place in Gibeon ...

1 Chronicles 23:28-32
but their duty was to assist the descendants of Aaron with the service of the house of the LORD, being responsible for the courts and chambers, the purification of all the holy things, and the work of the service of the house of God, / as well as for the rows of the showbread, the fine flour for the grain offering, the wafers of unleavened bread, the baking, the mixing, and all measurements of quantity and size. / They were also to stand every morning to give thanks and praise to the LORD, and likewise in the evening. ...

1 Chronicles 9:26-27
But the four chief gatekeepers, who were Levites, were entrusted with the rooms and the treasuries of the house of God. / They would spend the night stationed around the house of God, because they were responsible for guarding it and opening it every morning.