• http://en.wikipedia.org/wiki/Thom_Yorke - Thom Yorke – http://en.wikipedia.org/wiki/Vocals - vocals , http://en.wikipedia.org/wiki/Programming_%28music%29 - programming , http://en.wikipedia.org/wiki/Keyboard_instrument - keyboard , http://en.wikipedia.org/wiki/Guitar - guitar , http://en.wikipedia.org/wiki/Bass_guitar - bass guitar
• http://en.wikipedia.org/wiki/Colin_Greenwood - Colin Greenwood – bass, http://en.wikipedia.org/wiki/Sampler_%28musical_instrument%29 - sampler
• http://en.wikipedia.org/wiki/Jonny_Greenwood - Jonny Greenwood – http://en.wikipedia.org/wiki/Ondes_Martenot - Ondes Martenot , guitar, http://en.wikipedia.org/wiki/Orchestration - string arrangements , sampler
• http://en.wikipedia.org/wiki/Ed_OBrien - Ed O'Brien – guitar, programming
• http://en.wikipedia.org/wiki/Phil_Selway - Phil Selway – http://en.wikipedia.org/wiki/Drums - drums , percussion, programming

Additional musicians

• Andy Bush – http://en.wikipedia.org/wiki/Trumpet - trumpet
• Andy Hamilton – http://en.wikipedia.org/wiki/Tenor_horn - tenor horn
• Steve Hamilton – http://en.wikipedia.org/wiki/Alto_horn - alto horn
• Stan Harrison – http://en.wikipedia.org/wiki/Baritone_horn - baritone horn
• Martin Hathaway – alto horn
• Mike Kearsey – http://en.wikipedia.org/wiki/Bass_trombone - bass trombone
• Liam Kerkman – http://en.wikipedia.org/wiki/Trombone - trombone
• Mark Lockheart – tenor horn
• The Orchestra of St. Johns – http://en.wikipedia.org/wiki/Strings - strings
• John Lubbock – http://en.wikipedia.org/wiki/Conductor_%28music%29 - conductor
• http://en.wikipedia.org/wiki/Paul_Lansky - Paul Lansky – sample of "Mild und Leise" on "Idioteque"
• Arthur Kreiger – sample of "Short Piece" on "Idioteque"