Who's In Your Head

Producer: ILYA - Artist: Jonas Brothers - Producer: Max Martin - Mixer: Serban Ghenea - Bass: Shellback - Drums: Shellback - Guitar: David Stewart - Background Vocalist: Max Martin - Bass: Max Martin - Drums: Max Martin - Programming: Max Martin - Synthesizer: Max Martin - Background Vocalist: ILYA - Bass: ILYA - Programming: ILYA - Synthesizer: ILYA - Background Vocalist: Rami Yacoub - Guitar: Rami Yacoub - Engineer: Sam Holland - A&R: Wendy Goldstein - A&R: Kenneth Jarvis III - Engineer: John Hanes - Mastering Engineer: Randy Merrill