What does Ezra 3:10 mean?

When the builders finished laying the foundation of the Lord’s temple, the priests put on their robes and took their places with trumpets, and the Levites (descendants of Asaph) had cymbals to praise the Lord, following what King David of Israel had set up long ago. Ezra 3:10 - Modern Text Bible

(Once the foundation was done, they celebrated with music and praise, following the traditions King David had started.)