The Israelites who were present in Jerusalem celebrated the Festival of Unleavened Bread for seven days with great rejoicing, while the Levites and priests praised the LORD every day with resounding instruments dedicated to the LORD.
NIV
And the Israelites who were in Jerusalem kept the Feast of Unleavened Bread for seven days with great joy. The Levites and priests praised the Lord day by day, singing with instruments of much volume to the Lord.
AMP
And the children of Israel that were present at Jerusalem kept the feast of unleavened bread seven days with great gladness: and the Levites and the priests praised the LORD day by day, singing with loud instruments unto the LORD.
KJV