What If

String Arranger: Audrey Riley

Mastering Engineer: George Marino

Assistant: John Withnal

Assistant: Adam Noble

Assistant: Jon Bailey

Assistant: Jake Jackson

Assistant: Brad Spence

Assistant: Taz Mattar

Assistant: Rob Smith

Engineer: Adam Scheuermann

Engineer: Andrea Wright

Cello: Anne Lines

Engineer: Bryan Russell

Programmer: Carmen Rizzo

Engineer: Chris Athens

Guitar, Keyboards, Organ, Piano, Vocals: Chris Martin

Producer: Chris Martin

Violin: Chris Tumbling

Engineer: Dan Porter

Producer: Danton Supple

Masterer: George Marino

Violin: Greg Wilson

Bass, Guitar, Synthesizer, Vocals: Guy Berryman

Producer: Guy Berryman

Engineer: Jon Withnall

Guitar: Jonny Buckland

Producer: Jonny Buckland

Engineer, Mixer: Keith Gary

Engineer, Producer: Ken Nelson

Violin: Lavra Melhuish

Engineer: Mark Phythian

Programmer: Mark Phythian

Engineer: Mathieu LeJeune

Technician: Matt McGinn

Engineer, Mixer: Michael Brauer

Engineer: Mike Pierce

Strings, Viola: Peter Lale

Violin: Richard George

Programmer: Rob Smith

Viola: Susan Dench

Engineer: Ted Jensen

Engineer: Tim Roe

Drums, Percussion, Vocals: Will Champion

Producer: Will Champion

Engineer, Mixer: Will Hensley

Writer: Chris Martin

Writer: Guy Berryman

Writer: Jonny Buckland

Writer: Will Champion