Commemorating Randy"s 25 years as a recording artist, Anniversary Celebration includes a series of duets and re-recordings of classic hits and new songs. Guests on the album include Brad Paisley, Zac Brown Band, Kenny Chesney, Josh Turner, Alan Jackson, Don Henley, Tim McGraw, Shelby Lynn, Carrie Underwood, Willie Nelson, Kris Kristofferson, George Jones, Lorrie Morgan, Ray Price, Gene Watson and many others.