Treasury of Scripture Knowledge

Summary

Also the Levites which were the singers, all of them of Asaph, of Heman, of Jeduthun, with their sons and their brethren, being arrayed in white linen, having cymbals and psalteries and harps, stood at the east end of the altar, and with them an hundred and twenty priests sounding with trumpets:)

Bible References

The levites

2 Chronicles 29:25
The king followed the instructions Jehovah gave to King David through Gad, the king's prophet, and through the prophet Nathan. He stationed Levites in the Temple, with harps and cymbals,
1 Chronicles 15:16
David told the Levite leaders to appoint some of their brothers to serve as musicians. They were expected to play music on harps, lyres, and cymbals to produce joyful music for singing.
1 Chronicles 16:4
David appointed some Levites to serve in front of Jehovah's Ark by offering prayers, thanks, and praise to Jehovah the God of Israel.
1 Chronicles 23:5
Four thousand are to be gatekeepers and four thousand are to praise Jehovah with musical instruments I have provided for that purpose.
1 Chronicles 25:1
David and the commanders of the army set apart for the service some of the sons of Asaph and of Heman and of Jeduthun, who were to prophesy with lyres, harps and cymbals; and the number of those who performed their service was:
Ezra 3:10
When the builders laid the foundation of the Temple of Jehovah, the priests, dressed in their robes, took their places with horns, and the Levites, the sons of Asaph, with brass instruments, to give praise to Jehovah in the way ordered by David, king of Israel.

Arrayed

1 Chronicles 15:27
David was dressed in a fine linen robe, as were all the Levites who carried the Ark, the Levites who were singers, and Chenaniah, the leader of the musicians' prophetic songs. David also wore a linen ephod.
Revelation 15:6
The seven angels with the seven plagues came out of the temple. They were clothed in pure white linen, with their chests girded with golden girdles.
Revelation 19:8
It was granted to her that she dress in fine linen, clean and white: for the fine linen represents the righteous acts of the holy ones.

Cymbals

Psalm 92:3
To do this on a ten-stringed instrument with a melody on a harp.
Psalm 149:3
Let them praise his name with dancing. Let them make music to him with tambourines and lyres.
Psalm 150:3
Praise him with sounds from horns. Praise him with harps and stringed instruments.

An hundred

Numbers 10:1
Jehovah said to Moses:
Joshua 6:6
Joshua the son of Nun called the priests, and said to them: Take up the Ark of the Covenant. Seven priests should carry seven trumpets of rams' horns before the Ark of Jehovah.
1 Chronicles 15:24
The priests Shebaniah, Joshaphat, Nethanel, Amasai, Zechariah, Benaiah, and Eliezer blew trumpets in front of God's Ark. Obed Edom and Jehiah were doorkeepers for the ark.
1 Chronicles 16:6
The priests Benaiah and Jahaziel played trumpets all the time in front of the Ark of God's covenant.
Psalm 68:25
The singers are in front. The musicians are behind them. The young women beating tambourines are between them.