OKNOTOK was the first Radiohead compilation released after their back catalogue was transferred from
EMI to
XL Recordings in 2016. Previous compilations were not remastered, contained no new material and were issued without Radiohead's involvement. Radiohead announced
OKNOTOK on 2 May 2017. It was promoted with posters in cities around the world featuring cryptic messages, and a teaser video featuring "glitchy" computer graphics and lyrics from "Climbing Up the Walls". Radiohead temporarily restored their website to its 1997 state. The download and CD editions of
OKNOTOK were released on 23 June 2017, and the boxed edition shipped in July. Radiohead released "I Promise" on 2 June and "Man of War" on 22 June as downloads for those who had pre-ordered
OKNOTOK, accompanied by music videos. A video for "Lift" followed on 12 September. On 11 July, Radiohead released an "
unboxing" video previewing the contents of the special edition. The video features Chieftain Mews, a character who appears in Radiohead's webcasts and promotional material. In December 2019, Radiohead uploaded all their albums, including
OKNOTOK, to
YouTube. In January 2020, they added the
OKNOTOK special edition cassette to their website as part of the Radiohead Public Library, an online archive of their work. == Sales ==