The Exsultet – its history and origins
“This triumphant hymn and wonderful sacramental is the prelude to the Easter solemnities. It is a majestic proclamation of the Resurrection of Christ, a dramatic invitation to heaven and earth to join with the Church in joy and jubilation.”
This article at Catholic Culture sheds light on the origins and developments in the history of this great sacramental hymn.
The Exsultet in an 11th Century manuscript from Rochester Cathedral