Walmart gave in to employee pressure last week and agreed to cut back on how much Justin Bieber and Celine Dion are played in its stores.  At a shareholder meeting, a spokesman for the retail giant announced that the company will be switching up the music played at Walmart stores.  The move is believed to be in response to employee complaints that the two artists are played almost constantly in the stores.  According to a Washington post report, the company will be switching to a new process in which a DJ selects tunes to be played at Walmart stores across the globe.  There was no comment about the development from Justin Bieber or Celine Dion.