Kelly Clarkson – all vocals (1–7, 9–13, 15, 16), vocals (8, 14)
Ronnie Dunn]] – vocals (8)
Reba – vocals (14)
Trisha Yearwood – vocals (14)
Frank Abraham – bass (11)
Sandy de Crescent – orchestra contractor (3, 5, 9, 11)
Kevin Dukes – guitars (4)
James Gadson – drums (4, 7)
Jason Halbert – acoustic piano (15), Wurlitzer electric piano (15), Hammond B3 organ (15), programming (15)
Chaun D. Horton – drums (11)
Greg Kurstin – keyboards (1, 2, 9, 16), guitars (1, 2, 4–7, 9, 12, 13, 14), bass (1, 2, 4–7, 9, 12, 13, 14), drums (1, 2, 4–7, 12, 13, 14), programming (2, 12, 14), horn arrangements (2, 4, 5, 6, 11), orchestra arrangements (3, 5), acoustic piano (4–8, 10, 11, 12), organ (5, 6), strings (13)
Roy McCurdy – drums (8)
Miles McPherson – drums (15)
Gabe Noel – bass (8)
Einar Pedersen – bass (15)
David Ralicke – baritone saxophone (2), tenor saxophone (2), trombone (2, 6), trumpet (2, 6), flugelhorn (2), mellophone (2), saxophones (6), horn arrangements (6)
Aaron Redfield – drums (9)
The Regiment Horns (4, 5, 11)
Leon Silva – saxophones
Lasim Richards – trombone
Sean Erick – trumpet
Jesse Shatkin – programming (2)
Left Shires – trumpet (15)
Joseph Trapanese – orchestra arrangements and conductor (3, 5, 9, 11)
Booker White – music preparation (3, 5, 9, 11)
Gina Zimmitti – orchestra contractor (3, 5, 9, 11)