When I entered the TLA on Wednesday night, I experienced a slight feeling of déjà vu. And it wasn’t even just that I had been there the night before to see Bloc Party. No, it was because I was there to see British retro-soul singer Duffy, whose sound harkens back to Dionne Warwick during the Burt Bacharach years, or Dusty Springfield, if you need me to compare her to a white person to restore the......