The CMA said Monday that Crow and Gill would join hosts Brooks & Dunn in a performance of "Building Bridges" on the Nov. 6 live telecast.
John Rich of Big & Rich has been added to Gretchen Wilson's number "Come to Bed," a song he co-wrote.
The highlight of the gala will be the induction of the 2006 class of the Country Music Hall of Fame. The new members include George Strait, Sonny James and producer Harold Bradley. Kris Kristofferson will introduce the honorees.