Jonas Brothers •
Kevin Jonas II – lead
guitar, backing vocals •
Joe Jonas – lead vocals •
Nick Jonas – guitars, lead vocals,
keyboards,
piano,
glockenspiel,
drums on "What Did I Do to Your Heart", "Hey Baby" and "Keep It Real"
Additional musicians •
John Fields –
bass, guitars, keyboards,
programming, vocals,
percussion,
baritone guitar,
talk box •
John Taylor – lead guitar, vocals • Dorian Crozier – drums, percussion, programming •
Ken Chastain – percussion, programming, keyboards • Steve Lu – keyboards • Commissioner Mike – police scanner on "Don't Charge Me for the Crime" •
Common – guest rap on "Don't Charge Me for the Crime" • Chris Beaty – guitar solo on "Much Better" •
Will Owsley –
pedal steel and guitar on "Turn Right";
mandolin and baritone guitar on "What Did I Do to Your Heart" •
Stuart Duncan –
fiddle on "Turn Right" and "What Did I Do to Your Heart" •
Greg Garbowsky – bass on "What Did I Do to Your Heart" •
Jon Lind –
acoustic guitar on "What Did I Do to Your Heart" •
Frédéric Yonnet –
harmonica on "What Did I Do to Your Heart" •
Bruce Bouton – pedal steel on "Before the Storm" •
Miley Cyrus – guest vocal on "Before the Storm" •
Millard Powers – 12-string acoustic guitar on "Before The Storm" •
Michael Bland – drums on "Hey Baby" and "Paranoid" •
Jonny Lang –
lead guitar on "Hey Baby" • Steve Roehm –
vibraphone on "Paranoid" • Strings on "Black Keys", "Don't Speak", "Fly with Me", and "Before the Storm" arranged and conducted by Steve Lu and performed by
Eric Gorfain, Daphne Chen, Radu Pieptea, Wes Precourt (
violins), Caroline Buckman, Briana Bandy (
violas),
Richard Dodd and Matt Cooker (
cellos). •
Horns on "Much Better" and "Hey Baby" arranged by Michael Nelson and performed by
The Hornheads: Steve Strand (lead trumpet), Dave Jensen (
trumpet), Michael Nelson (
trombone), Kenni Holmen (
tenor saxophone), Kathy Jensen (
baritone saxophone). • Horns on "Poison Ivy" arranged by Ken Chastain and performed by Matt Darling (trombone), Joe Mechtenberg (
saxophone), Zack Lozier (trumpet). • Horns on "World War III" arranged by
Jerry Hey (trumpet),
Gary Grant (trumpet), Dan Higgins (saxophone),
Bill Reichenbach Jr. (trombone). • Horns on "Keep It Real" arranged by Steve Lu and performed by Dan Fornero (trumpet),
George Stanford (trombone), Brian Gallagher (saxophone).
Production •
John Fields – producer, engineer, mixing • Paul David Hager – mixing, additional engineering • Will Owsley – additional engineering • Ken Chastain – additional engineering • Michael B. Nelson – additional engineering • Steven Miller – strings engineer • Wesley Seidman – assistant strings engineer •
Dave McNair – mastering ==Charts==