Zadok the Priest:
"Zadok the priest and Nathan the prophet anointed Solomon King, and all the people rejoiced and said, God save the King.
Long live the King. May the King live forever. Amen. Hallelujah!"
No, they really, actually did - straight up: 1 Kings 1:39-40.
"Zadok the Priest" is the most famous of four coronation anthems written by Handel for George II's coronation at Westminster Abbey in 1727; it has been sung at every British coronation since.
Zadok began his priestly career as one of David's two priests and later sided with Solomon against Adonijah when they squabbled over who would be king after David.
Solomon won and asked Zadok to anoint him, which he did.
Zadok's priestly descendents (or the zadokites) were top dogs in the priesthood until the exile and will be again at the restoration [Ezekiel 48:11].
Zadok is mentioned by St. Matthew as one in a long line of ancestors to Jesus Christ - our One High Priest [Matthew 1:14].