The following people are credited as replacements or additions if they were not credited on opening night.

David Abeles Took over for Levi Kreis in his absence.	Jerry Lee Lewis	(Mar 4, 2011-Mar 13, 2011)
Hunter Foster	Sam Phillips	(May 3, 2011 - ?)
Erik Hayden	Carl Perkins	(Mar 15, 2011 - ?)
Jerry Lee Lewis One-night-only encore		(Sep 10, 2010-Sep 10, 2010)
Rob Lyons	Carl Perkins	(May 3, 2011 - ?)
Jared Mason	Carl Perkins
	Jerry Lee Lewis	(Mar 15, 2011 - ?)
Victoria Matlock	Dyanne	(Mar 15, 2011 - ?)
James Moye	Sam Phillips	(Dec 21, 2010 - ?)

Understudies: David Abeles (Jerry Lee Lewis), Christopher Ryan Grant (Sam Phillips), Dan Mills (Carl Perkins), Billy Woodward (Elvis Presley, Johnny Cash).