Having chairs set in rows tends to have a civilising effect on a crowd but tonight at Bush Hall the attendees need no reminders when it comes to audience etiquette.  A respectful silence falls over them long before support act Dietrich Strause has got himself comfy behind the mic and we're sat so still and expectant I suspect we're actually starting to freak him out.  Undeterred, Strause paddles through his set of deftly fingerpicked and tender folk songs perhaps a little too apologetically but is nonetheless warmly received.