Backing Vocals – Andrew Watt* (tracks: A1-C3, D2, D3), Lucius (Jess Wolfe & Holly Laessig)* (tracks: D3)
Bass – Andrew Watt* (tracks: B1, B3, C1, C3, D3), Chris Chaney (tracks: C2), Duff McKagan (tracks: A1, B2), Robert Trujillo (tracks: A2, A3, C1, C3, D1, D2)
Cello – Jacob Braun (tracks: B3, D2), Paula Hochhalter (tracks: B3, D2), Ross Gasworth (tracks: B3)
Contractor – Suzie Katayama (tracks: B3, D2)
Copyist – Bettie Ross (tracks: B3)
Drums – Andrew Watt* (tracks: D2, D3), Chad Smith (tracks: A1, A2, B1-B3, C2, C3, D1-D4), Taylor Hawkins (tracks: A3, C1, D3)
Engineer – Paul Lamalfa
Guitar – Andrew Watt* (tracks: A1-A3, B2, B3, C1-D4), Eric Clapton (tracks: B2), Jeff Beck (tracks: A2, B3), Josh Homme (tracks: D3), Mike McCready (tracks: A1), Tony Iommi (tracks: B1, D1), Zakk Wylde (tracks: A1-A3, B3, C1-C3, D2, D3)
Harmonica – Ozzy Osbourne (tracks: D1, D4)
Keyboards – Andrew Watt* (tracks: A2, B2, B3, C1, D2, D3), Zakk Wylde (tracks: A2, B2, C1, C3)
Lacquer Cut By – RKS*
Mastered By – Randy Merrill
Mixed By – Alan Moulder
Organ – James Poyser (tracks: B2, C1), Zakk Wylde (tracks: C2)
Percussion – Chad Smith (tracks: B3), Taylor Hawkins (tracks: A3)
Piano – Andrew Watt* (tracks: A3, B3, D3)
Producer – Andrew Watt*, Robert Edward Bradley (tracks: B3), Simon Climie (tracks: B2)
Strings, Arranged By, Conductor – David Campbell (tracks: B3, D2)
Viola – Andrew Duckles (tracks: B3, D2), David Walther (tracks: B3, D2), Zachary Dellinger* (tracks: B3)
Violin – Alyssa Park (tracks: B3), Jackie Brand (tracks: B3), Jenny Takamatsu (tracks: B3), Kerenza Peacock (tracks: D2), Mario DeLeon (tracks: B3), Michele Richards (tracks: B3), Natalie Leggett (tracks: B3, D2), Neil Samples (tracks: B3, D2), Nina Evtuhov (tracks: B3), Philippe Lévy (tracks: B3), Roberto Cani (tracks: B3), Sara Parkins (tracks: D2), Songa Lee (tracks: B3, D2)
Violin, Concertmaster – Charlie Bisharat (tracks: B3, D2)
Vocals – Ozzy Osbourne