A&R – Dan McCarroll, Don Was, Michael Howe (3)
Accordion – Gary Griffin, Joey Grzyb
Acoustic Guitar, Electric Guitar – Dean Parks, Jimmy Riley*, Tom Bukovac
Administrator [A&R Administration] – Liz Isik, Ronette Bowie
Art Direction – Mark London (2)
Backing Vocals [Background Vocals] – Jeff Foskett*, Jimmy Riley*, Matt Jardine, Nelson Bragg, Scott Bennett, Taylor Mills, Thom Griffin
Bass – Bob Lizik, Brett Simons, Don Was, Michael Rhodes, Shane Soloski, Zachary Dawes
Cello – Alisha Bauer, Cameron Stone, Giovanna Clayton*, Jill Kaeding, Vanessa Freebairn Smith*
Concertmaster – Peter Kent (2)
Coordinator [A&R Coordinator] – Rachel Jones (8)
Drum Programming [Programming] – Sebu*
Drums – Chad Cromwell, Eddie Bayers, Jim Keltner, Kenny Aronoff, Vinnie Colaiuta
Drums, Percussion – Nelson Bragg
Electric Guitar – David Marks, M. Ward, Mark Goldenberg, Nick Walusko, Richie Davis (3)
Engineer [Additional Engineer] – Andrew Twiss, Darian Sahanaja, Gary Griffin, Larry Millas, Mike Czaszwicz, Nick Rowe, Nick Walusko, Sergio Ruelas Jr.*, Steve Desper*
Engineer [Assistant Engineer] – Leslie Richter, Mickey Evelyn*, Patrick DeWitte, Rouble Kapoor, Tyler Parkinson
English Horn, Oboe – Amy Barwan
Flugelhorn, Trumpet – Mark Isham
French Horn – John Mason (2)
French Horn, Electric Guitar – Probyn Gregory
Keyboards [Additional Keyboards] – Jeff Lantz, Sebu Simonian
Layout – Rachel Gutek
Lead Vocals – Nate Ruess, Sebu*
Lead Vocals, Backing Vocals [Background Vocals] – Al Jardine*, Blondie Chaplin, Brian Wilson, Kacey Musgraves, Peter Hollens, Zooey Deschanel
Mastered By – Bob Ludwig (tracks: 1, 3 to 18), Mike Marsh (tracks: 2)
Mixed By – Bob Clearmountain
Mixed By [Additional Mixing], Engineer [Additional Engineer] – Mark Linett
Other [Business Affairs] – Josh Kamzan, Michael Cantor (3)
Other [Marketing] – Peter Fletcher
Percussion, Bass, Piano [Acoustic Piano], Organ [B3 Organ], Vibraphone [Vibes] – Scott Bennett
Photography By [Additional Photos] – Mark London (2)
Photography By [Cover Photo] – Daria Wilson
Photography By [Photo Of Brian Wilson] – Brian Bowen Smith
Piano [Acoustic Piano], Organ [B3 Organ], Keyboards [Additional Keyboards] – Brian Wilson, Joe Thomas (5)
Piano [Acoustic Piano], Organ [B3 Organ], Vibraphone [Vibes] – Darian Sahanaja
Producer [Additional Production], Mixed By [Additional Mixing] – Sebu* (tracks: 2)
Producer, Arranged By, Mixed By [Additional Mixing] – Brian Wilson
Producer, Mixed By [Additional Mixing] – Joe Thomas (5) (tracks: 1 to 16)
Recorded By, Mixed By [Additional Mixing] – Bill Hare, Frank Pappalardo, Wesley M. Seidman*
Saxophone, Flute, Bass Harmonica, Conductor – Paul Von Mertens*
Trombone – Charles Morallis, Dave Stahlberg, Tom Garling
Trumpet – Carey Deadman, Larry Hall, Rob Parton, Tim Bales, Wayne Bergeron
Viola – Briana Bandy, Caroline Buckman, Darrin McCann, JoAnn Tominaga, Scott Hosfeld
Violin – Amy Wickman, Charlie Bisharat, Chihsuan Yang, Clayton Haslop, John Wittenberg, Julie Rogers (2), Marisa Kuney, Mark Robertson (3), Sharon Jackson (2), Songa Lee*