Supercollider / The Butcher

“Supercollider” and “The Butcher” are songs by the English alternative rock band Radiohead. They were released as a double A-side single on 12-inch vinyl in the UK, Europe and Japan on 16 April 2011 for Record Store Day. The single was released on the same format in the United States and Canada on 14 June 2011.

“The Butcher” was recorded and mixed during the King of Limbs sessions, but excluded from the album as it did not fit with the other tracks.

Singer Thom Yorke first performed “Supercollider” solo on 6 June 2008 at Malahide Castle, Dublin; studio work on the track was started during the King of Limbs sessions and finished in March 2011, after the album’s release.