The former "X Factor" winner's real name is Joseph so it's a perfect fit for the singer, who will also appear in a Blackpool performance of Tommy this month, reported Digital Spy.
McElderry, 24, will play Joseph in theatres across the UK from spring 2016, with full dates and venues to be announced in the near future
Tim Rice and Andrew Lloyd Webber's hit musical continues to be hugely popular after debuting nearly 35 years ago, with classic songs including "Any Dream Will Do" and "Close Every Door".
