When Isaac Watts wrote “Joy To The World” based on a score by George Frederick Handel’s “The Messiah” he was writing about the 2nd coming of Christ — not the first advent as we almost all assume. Notice the words - particularly of the 2nd, 3rd and 4th verses:

Joy to the world, the Lord is come!
Let earth receive her King;
Let every heart prepare Him room,
And heaven and nature sing,
And heaven and nature sing,
And heaven, and heaven, and nature sing.

Joy to the world, the Savior reigns!
Let men their songs employ;
While fields and floods, rocks, hills and plains
Repeat the sounding joy,
Repeat the sounding joy,
Repeat, repeat, the sounding joy.

No more let sins and sorrows grow,
Nor thorns infest the ground;
He comes to make His blessings flow
Far as the curse is found,
Far as the curse is found,
Far as, far as, the curse is found.

He rules the world with truth and grace,
And makes the nations prove
The glories of His righteousness,
And wonders of His love,
And wonders of His love,
And wonders, wonders, of His love.

Here are a few random ideas on how you might create a fresh new sound for an old Christmas Carol:

For ideas galore on arranging Christmas Carols go to “The Secret of Arranging Spectacularly Beautiful Christmas Carols”