Coordinator [Album Production Coordinator] – Lindsay Chase
Design – Richard Scane Goodheart
Engineer – Brendan O’Brien (tracks: A1, A2, B1, B3, C2), Dave Jerden (tracks: C4)
Engineer [Assistant] – Chris Holmes (3) (tracks: D3, D4), Dan Leffler (tracks: D3, D4), Philip Broussard* (tracks: D3, D4)
Engineer, Mixed By – Jim Scott (tracks: A3, A4, B2, B4, C1, D1, D2)
Keyboards – Greg Kurstin (tracks: A3, A4, B2, C1, D2)
Mastered By – George Marino (tracks: C4), Stephen Marcussen (tracks: C3), Vlado Meller (tracks: A3, A4, B2, B4, C1, D1-D4)
Mixed By – Garth Richardson (tracks: C4), Richard Dodd (tracks: D3, D4)
Photography By – Chris Cuffaro, Laura Black, Melodie Lawrence, Mr. Bonzai
Producer – Michael Beinhorn (tracks: C4), Rick Rubin (tracks: A1-C3, D1-D4)
Recorded By – David Schiffman (tracks: D3, D4), Greg Fidelman (tracks: D3, D4)
Recorded By, Mixed By – D. Sardy* (tracks: C3)
Written-By – Anthony Kiedis (tracks: A1-C3, D1-D4), Chad Smith (tracks: A1-C3, D1-D4), Dave Navarro (tracks: C3), Flea (tracks: A1-C3, D1-D4), John Frusciante (tracks: A1-C2, D1-D4), Stevie Wonder (tracks: C4)