1 Chronicles 23:5

four thousand were doorkeepers; and four thousand praised the LORD with the instruments which I made, for giving praise."

2 Chronicles 29:25-26

He set the Levites in the house of the LORD with cymbals, with stringed instruments, and with harps, according to the commandment of David, and of Gad the king's seer, and Nathan the prophet; for the commandment was of the LORD by his prophets.

Amos 6:5

who strum on the strings of a harp; who invent for themselves instruments of music, like David;

1 Kings 10:12

The king made of the almug trees pillars for the house of the LORD, and for the king's house, harps also and stringed instruments for the singers: there came no such almug trees, nor were seen, to this day.

1 Chronicles 6:31-48

These are they whom David set over the service of song in the house of the LORD, after that the ark had rest.

1 Chronicles 9:17-27

The gatekeepers: Shallum, and Akkub, and Talmon, and Ahiman, and their brothers (Shallum was the chief),

1 Chronicles 9:33

These are the singers, heads of ancestral houses of the Levites, who lived in the chambers and were free from other service; for they were employed in their work day and night.

1 Chronicles 15:16-24

David spoke to the chief of the Levites to appoint their brothers the singers, with instruments of music, stringed instruments and harps and cymbals, sounding aloud and lifting up the voice with joy.

1 Chronicles 16:38

and Obed-Edom with their brothers, sixty-eight; Obed-Edom also the son of Jeduthun and Hosah to be doorkeepers;

1 Chronicles 16:41-42

and with them Heman and Jeduthun, and the rest who were chosen, who were mentioned by name, to give thanks to the LORD, because his loving kindness endures forever;

1 Chronicles 25:1-7

Moreover, David and the captains of the army set apart for the service certain of the sons of Asaph, and of Heman, and of Jeduthun, who should prophesy with harps, with stringed instruments, and with cymbals: and the number of those who did the work according to their service was:

1 Chronicles 26:1-12

For the divisions of the doorkeepers: of the Korahites, Meshelemiah the son of Kore, of the sons of Asaph.

2 Chronicles 8:14

He appointed, according to the ordinance of David his father, the divisions of the priests to their service, and the Levites to their offices, to praise, and to minister before the priests, as the duty of every day required; the doorkeepers also by their divisions at every gate: for so had David the man of God commanded.

2 Chronicles 20:19-21

The Levites, of the children of the Kohathites and of the children of the Korahites, stood up to praise the LORD, the God of Israel, with an exceeding loud voice.

2 Chronicles 35:15

The singers the sons of Asaph were in their place, according to the commandment of David, and Asaph, and Heman, and Jeduthun the king's seer; and the gatekeepers were at every gate: they did not need to depart from their service; for their brothers the Levites prepared for them.

Ezra 7:7

There went up some of the children of Israel, and of the priests, and the Levites, and the singers, and the gatekeepers, and the Nethinim, to Jerusalem, in the seventh year of Artaxerxes the king.

Nehemiah 7:73

So the priests, and the Levites, and the gatekeepers, and the singers, and some of the people, and the Nethinim, and all Israel, lived in their cities. When the seventh month had come, the children of Israel were in their cities.

Psalm 87:7

Those who sing as well as those who dance say, "All my springs are in you."

Treasury of Scripture Knowledge

Summary

Moreover four thousand were porters; and four thousand praised the LORD with the instruments which I made, said David, to praise therewith.

Bible References

Porters

1 Chronicles 9:17
The gatekeepers: Shallum, and Akkub, and Talmon, and Ahiman, and their brothers (Shallum was the chief),
1 Chronicles 15:23
Berechiah and Elkanah were doorkeepers for the ark.
1 Chronicles 16:38
and Obed-Edom with their brothers, sixty-eight; Obed-Edom also the son of Jeduthun and Hosah to be doorkeepers;
1 Chronicles 26:1
For the divisions of the doorkeepers: of the Korahites, Meshelemiah the son of Kore, of the sons of Asaph.
2 Chronicles 8:14
He appointed, according to the ordinance of David his father, the divisions of the priests to their service, and the Levites to their offices, to praise, and to minister before the priests, as the duty of every day required; the doorkeepers also by their divisions at every gate: for so had David the man of God commanded.
2 Chronicles 35:15
The singers the sons of Asaph were in their place, according to the commandment of David, and Asaph, and Heman, and Jeduthun the king's seer; and the gatekeepers were at every gate: they did not need to depart from their service; for their brothers the Levites prepared for them.
Ezra 7:7
There went up some of the children of Israel, and of the priests, and the Levites, and the singers, and the gatekeepers, and the Nethinim, to Jerusalem, in the seventh year of Artaxerxes the king.
Nehemiah 7:73
So the priests, and the Levites, and the gatekeepers, and the singers, and some of the people, and the Nethinim, and all Israel, lived in their cities. When the seventh month had come, the children of Israel were in their cities.

Praised

1 Chronicles 6:31
These are they whom David set over the service of song in the house of the LORD, after that the ark had rest.
1 Chronicles 9:33
These are the singers, heads of ancestral houses of the Levites, who lived in the chambers and were free from other service; for they were employed in their work day and night.
1 Chronicles 15:16
David spoke to the chief of the Levites to appoint their brothers the singers, with instruments of music, stringed instruments and harps and cymbals, sounding aloud and lifting up the voice with joy.
1 Chronicles 16:41
and with them Heman and Jeduthun, and the rest who were chosen, who were mentioned by name, to give thanks to the LORD, because his loving kindness endures forever;
1 Chronicles 25:1
Moreover, David and the captains of the army set apart for the service certain of the sons of Asaph, and of Heman, and of Jeduthun, who should prophesy with harps, with stringed instruments, and with cymbals: and the number of those who did the work according to their service was:
2 Chronicles 20:19
The Levites, of the children of the Kohathites and of the children of the Korahites, stood up to praise the LORD, the God of Israel, with an exceeding loud voice.
Psalm 87:7
Those who sing as well as those who dance say, "All my springs are in you."

The instruments

1 Kings 10:12
The king made of the almug trees pillars for the house of the LORD, and for the king's house, harps also and stringed instruments for the singers: there came no such almug trees, nor were seen, to this day.
2 Chronicles 29:25
He set the Levites in the house of the LORD with cymbals, with stringed instruments, and with harps, according to the commandment of David, and of Gad the king's seer, and Nathan the prophet; for the commandment was of the LORD by his prophets.
Amos 6:5
who strum on the strings of a harp; who invent for themselves instruments of music, like David;