12 grandes éxitos en versión original

Compilation by Chicago

Released 1998

Al Jardine
background vocals [10]
Armin Steiner
assistant [4, 6], strings [4, 6, 10-11]
Brian Ross-Myring
engineer [1, 12]
Carl Wilson
additional [6], background vocals [6, 10]
Chaka Khan
background vocals [4]
Chris Hinshaw
engineer [1, 12]
David Walter Foster
arranger [7-8], producer [5, 7-8]
David “Hawk” Wolinski
synthesizer [4, 10-11]
Dennis Wilson
background vocals [10]
Dominic Frontiere
orchestrator [6]
Don Puluse
engineer [1, 12]
Humberto Gatica
engineer [7-8], mix [7-8]
James Pankow
brass [4]
James William Guercio
acoustic guitar [6], bass [6], guitar [10], orchestrator [6], producer [1-2, 4, 6, 10-12]
Jeff Guercio
assistant [2], engineer [10-11]
Jeremy Lubbock
instrument arranger [8]
Jimmie Haskell
strings [11]
Larry Fergusson
assistant [7-8]
Peter Cetera
arranger [7-8], lead vocals [1-2, 11], orchestrator [6]
Phil Ramone
mix [2, 10-11]
Richard Blakin
assistant [2]
Terry Kath
lead vocals [10, 12]
Tim Cetera
additional [6], background vocals [6]
Tom Likes
assistant [4, 6]
Walter Parazaider
flute [12], solo [12]
Wayne Tarnowski
engineer [4, 6, 10-11], recording [2]