Radiohead’s Reissue of “OK Computer” Has a Hidden Treasure

To celebrate the 20th anniversary of OK Computer, Radiohead has released a £100 special edition box of the record—with a hidden treat. As well as an art book and notes from Thom Yorke, the commemorative edition comes with a C90 cassette—on which is a collection of demos and two minutes of “a bizarre high-pitched frequency.” That sound has been recognized as the ZX Spectrum (an …