The wife of rap mogul Jay-Z and resident diva of pop/R&B brings her Mrs. Carter World Tour Show to Boston this July, so be prepared for the ‘wow factor.’ With the wardrobe changes, vocal acrobatics, elaborate dance numbers, high-powered fans that exist just to blow her hair and the possibility of Mrs. Carter descending from the ceiling, a Beyoncé show is a spectacle that everyone should witness at least once in their lives.