If there was going to be a memorial statue for David Bowie then Aylesbury might seem an odd, out-of-the-way place for it. Why not Brixton, where he was born, or Bromley, where he was formed, or Soho, where he was transformed? The connection goes back to the early 1970s when, despite its traditional-market-town identity, Aylesbury had a thriving music scene.