Browsing through stalls in an antiques emporium in Kingston upon Thames a couple of weeks ago, I came across a six-page letter protected by a clear A4 sleeve, with a Post-It note attached, indicating it was by “Gordon Haskell, lead singer King Crimson, ‘Harry’s Bar’ etc.” On sale for £10, I thought it was an interesting piece of prog memorabilia, so I bought it. On closer inspection, it turns out that it’s Haskell’s opinion of everything that was wrong with the music industry