Kid A is the fourth studio album by the English rock band Radiohead, released in October 2000 on Parlophone. Burnt out after recording and promoting Radiohead's acclaimed 1997 album OK Computer, songwriter Thom Yorke envisioned a radical change in direction for their next album. Incorporating influences from krautrock, jazz, 20th-century classical music and the electronic music of Warp artists, Radiohead replaced their three-guitar line-up with synthesisers, drum machines, the ondes Martenot, string orchestras and brass instruments. They recorded Kid A with producer Nigel Godrich in Paris, Copenhagen, Gloucestershire, and their hometown Oxford. The sessions produced over 20 finished tracks; Radiohead saved many of them for their subsequent album, Amnesiac, released the following year.