https://www.engadget.com/2017/07/13/radiohead-album-hides-an-app-that-only-r uns-on-an-80s-computer/
Apparently the band Radiohead has issued a special edition album that includes a cassette of some of their demos. The very last recording on the tape turns out to be a Spectrum ZX program that can be loaded to run an easter egg (if you have a real Spectrum ZX) or through an emulator. -Ali
