Thom Yorke - vocals, guitar, piano, electronica
Ed O'Brien - guitar, backing vocals
Colin Greenwood - bass, sequencer
Jonny Greenwood - guitar, keyboards, programming, modular synthesizer, celeste, string arrangements
Phil Selway - drums, programming
Additional musicians:
The Millennia Ensemble - strings
Matrix Music School - choir on "15 steps"
Produced by Nigel Godrich
Recorded at Tottenham Court House, Marlborough, Wilts; Halswell House, Taunton, Somerset; Hospital Studios, Covent Garden, London; Radiohead's own studio in Oxfordshire; August 2005-June 2007.
