Credit

• Producer - David Foster (2-3 to 2-8)
• Written-By - David Foster (2-3, 2-4, 2-6, 2-7)
• Guitar - Bruce Gaitsch
• Vocals, Keyboards, Guitar - Bill Champlin
• Producer - Ron Nevison (2-9, 2-10. 2-12)
• Vocals, Guitar - Donnie Dacus
• Vocals, Bass - Peter Cetera
• Written-By - Peter Cetera (1-8, 1-12, 1-15 to 2-4, 2-6)
• Drums - Tris Imboden
• Technician [Audio Supervision] - Jeff Magdid
• Producer - James William Guercio (1-1 to 2-1)
• Congas, Percussion, Vocals - Laudir de Oliveira
• Mastered By [Remastering] - David Donnelly
• Compilation Producer - Cheryl Pawelski
• Trombone, Vocals - James Pankow
• Written-By - James Pankow (1-4, 1-6, 1-8 to 1-10, 1-13)
• Trumpet, Flugelhorn, Vocals - Lee Loughnane
• Vocals, Guitar - Terry Kath
• Drums, Percussion, Vocals - Danny Seraphine
• Woodwind, Vocals - Walter Parazaider
• Photography By - Jimmy Katz
• Vocals, Keyboards - Robert Lamm
• Written-By - Robert Lamm (1-1 to 1-3, 1-5, 1-7, 1-14)
• Vocals, Bass - Jason Scheff
• Guitar - Chris Pinnick
• Supervised By [Editorial Supervision] - Sheryl Farber
• Other [Discographical Annotation] - Steve Woolard
• Guitar, Vocals - Dawayne Bailey
• Guitar, Vocals - Keith Howland
• Compilation Producer - Mike Engstrom
• Other [Product Manager] - Mike Engstrom
• Other [Project Assistant] - Scott Webber
• Supervised By [Editorial Supervision] - Vanessa Atkins
• Design - Jean Krikorian
• Art Direction - H. Keller
• Design [End Page Designs] - Ashley Underwood
• Design [End Page Designs] - Vincent Gonzales
• Design [End Page Designs] - Dick T. Cole
• Design [End Page Designs] - Arnaud Leger
• Design [End Page Designs] - Al Mainwaring
• Design [End Page Designs] - Don Garlock Jr.
• Design [End Page Designs] - Craig Stephen
• Design [End Page Designs] - Jim Jamitis
• Liner Notes - Bill DeYoung
• Design [Cover Design] - Mark Rosenmeier
• Design [End Page Designs] - Joshua Banker