Fifty-one tracks and not a single one you would hear on the radio. This is the Prince catalogue below the waterline, and it is where the real argument lives. The problem of abundance Prince recorded relentlessly. The Paisley Park vault reportedly holds thousands of unreleased recordings, enough for decades of posthumous releases, and even within his official catalogue the sheer volume means that dozens of superb songs never got near a single. That creates a specific pleasure for listeners: almost nobody has heard all of it, and a well-assembled deep-cuts playlist can genuinely surprise people who have owned the albums for forty years. He died in April 2016 of an accidental fentanyl overdose, and the reissue programme since has been unusually generous — the Sign o' the Times and 1999 super-deluxe editions in particular have released genuinely important material. What to listen for "When We're Dancing Close and Slow" is from For You and Prince -e...