The answer is: Trumpets and cymbals

Ezra 3:10

When the temple foundation was rebuilt, those trumpets and cymbals played a great role in the joyous atmosphere of that momentous occasion! Ezra 3:10 points out that these instruments were not chosen haphazardly; they are deeply rooted in the traditions of worship that stretch back to ancient cultures. Trumpets, particularly the shofar (a ram's horn), have profound significance in Scripture, often used to signal major events or calls to assembly. They were known as instruments of celebration, proclamation, and an invitation to worship, echoing the powerful moments in Israel’s history.

Cymbals, on the other hand, added rhythm and power to the worship experience, hitting that uplifting sound that made everybody's hearts race with joy! It's intriguing that these instruments not only celebrate the solemnity of a rebuilt temple but also echo similar moments in the Psalms, particularly in Psalm 150, where it joyfully beckons, “Praise Him with the sound of a trumpet; praise Him with resounding cymbals.” In many ways, it's these instruments and their sounds that act as earthly auras reflecting divine joy.

Symbolically, the act of physically rebuilding the foundation signifies a new beginning, much like notes played in a song herald a fresh sound or rhythm. These foundational sounds turned an ordinary gathering into a celebration worthy of their historical connection to God, urging all to participate in this communal festivity and reaffirmation of faith. Don't you just love how music has united so many through the ages?