Directed and choreographed by Lara Teeter, Guarini will be joined by Mamie Parris (100 in the Shade, The Drowsy Chaperone, Ragtime) as the Narrator and Austin Miller ("Grease: You're the One That I Want!," Hairspray national tour) as the Pharoah.

"I'm exhilarated, excited and overwhelmed with joy to work with this remarkable cast," said director Teeter in a statement. "For years now, I've been honored and privileged to perform at the largest outdoor theatre in the country and, more recently, watch my own children bound across the Muny stage underneath the stars and those glorious oak trees. Now I get to direct and choreograph and become a Muny storyteller. I'm in heaven."

Joseph and the Amazing Technicolor Dreamcoat features lyrics by Tim Rice and music by Andrew Lloyd Webber. Additional casting will be announced at a later date.

According to the Muny, "Children of all ages know the Old Testament story of Jacob, his 12 sons, and the amazing adventures of his 11th son, Joseph. Andrew Lloyd Webber and Tim Rice originally wrote a children's oratorio that has, in time, expanded into a beloved classic. This production will be the first at The Muny to use the orchestrations and changes that were developed for the highly successful West End production in London."

Guarini, who last starred as Billy Flynn in the Muny's production of Chicago, has been seen on Broadway in American Idiot and Women on the Verge of a Nervous Breakdown. The former "American Idol" conestant also starred as Roger in Surflight's production of Rent. Visit Guarini's page at the Playbill Vault. For more information, visit Muny.org.