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Justin Meldal-Johnsen, Producer, Keyboards - Ken Andrews, MixingEngineer - Ilan Rubin, Drums, Percussion, Gang Vocals - Hayley Williams, Keyboards, Backing Vocals, Lead Vocals, Writer, Synthesizer, Gang Vocals - Ted Jensen, MasteringEngineer - Vanessa Freebairn-Smith, Strings - Paramore, MainArtist - Jeremy Davis, Bass Guitar, Keyboards, Synthesizer, Gang Vocals - Taylor York, Additional Drums, Guitar, Keyboards, Percussion, Writer, Programming & Keyboards, Synthesizer, Gang Vocals - Caroline Campbell, Strings - Roger Joseph Manning, Jr., String Arranger - Erik Arvinder, Strings - Alma Fernandez, Strings - Songa Lee, Strings - Sam Fischer, Strings - Carlos de la Garza, Engineer, Percussion - Kathleen Sloan, Strings - Mike Schuppan, AssistantEngineer - David Schwerkolt, AssistantEngineer - Luke Maurer, Strings - Justin Meldal Johnsen, Engineer, Percussion, Programming & Keyboards, Synthesizer Justin Meldal-Johnsen, Producer - Ken Andrews, MixingEngineer - Joy Williams, FeaturedArtist - Ilan Rubin, Drums, Percussion, Gang Vocals - Hayley Williams, Keyboards, Backing Vocals, Lead Vocals, Writer, Synthesizer, Gang Vocals - Ted Jensen, MasteringEngineer - Vanessa Freebairn-Smith, Strings - Paramore, Performance, MainArtist - Jeremy Davis, Bass Guitar, Keyboards, Synthesizer, Gang Vocals - Taylor York, Additional Drums, Guitar, Keyboards, Percussion, Writer, Programming & Keyboards, Synthesizer, Gang Vocals - Caroline Campbell, Strings - Roger Joseph Manning, Jr., String Arranger - Erik Arvinder, Strings - Alma Fernandez, Strings - Songa Lee, Strings - Sam Fischer, Strings - Carlos de la Garza, Engineer, Percussion - Kathleen Sloan, Strings - Mike Schuppan, AssistantEngineer - David Schwerkolt, AssistantEngineer - Luke Maurer, Strings - Justin Meldal Johnsen, Engineer, Percussion, Programming & Keyboards, Synthesizer A Warner Music Group Company ℗ 2013 Atlantic Recording Corporation for the world outside of the United States. © 2014 Atlantic Recording Corporation For the United States and WEA International Inc. Justin Meldal-Johnsen, Producer, Keyboards - Ken Andrews, MixingEngineer - Ilan Rubin, Drums, Percussion, Gang Vocals - Hayley Williams, Keyboards, Backing Vocals, Lead Vocals, Writer, Synthesizer, Gang Vocals - Ted Jensen, MasteringEngineer - Paramore, MainArtist - Jeremy Davis, Bass Guitar, Keyboards, Synthesizer, Gang Vocals - Taylor York, Additional Drums, Guitar, Keyboards, Percussion, Writer, Programming & Keyboards, Synthesizer, Gang Vocals - Caroline Campbell, Strings - Sean Dancy, Choir - Vincent Brantley, Choir - Carlos de la Garza, Engineer, Percussion - Brandon Hampton, Choir - Mike Schuppan, AssistantEngineer - David Schwerkolt, AssistantEngineer - Joslyn James, Choir - Katherine Dancy, Choir - Talitha Manor, Choir - Yolanda Harris-Dancy, Choir - Justin Meldal Johnsen, Engineer, Percussion, Programming & Keyboards, Synthesizer
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