Horns were Used: As Musical Instruments

Have seven priests carry seven rams’ horns in front of the ark. Then on the seventh day, march around the city seven times, while the priests blow the horns.

And when there is a long blast of the ram’s horn and you hear its sound, have all the people give a mighty shout. Then the wall of the city will collapse and all your people will charge straight into the city.”

All these sons of Heman the king’s seer were given him through the promises of God to exalt him, for God had given Heman fourteen sons and three daughters.