Ten boys were picked to go through to the live shows, with an additional added in case anyone drops out or falls ill through the process.
The performers, who want to win the lead role in Webber's revival of Jesus Christ Superstar, include 31-year-old former X Factor Boot Camp contestant Ben Forster, Warrington's David Hunter, Scotland's Dirk Johnston, rock singer Jeff Anderson and Voice UK reject Nathan James.
Other finalists include Irish actor Nial Sheehy, Geordie Afnan Iftikhar, 41-year-old Roger Wright, Wirral singer Rory Taylor and Birmingham charity worker Tim Prottey-Jones.
Newcastle cabaret singer Jon Moses is the 11th finalist who will be brought in if anyone drops out of the show.
Superstar continues on Sunday night (July 15) at 9pm on ITV1.
Watch our video with the Superstar final 11 talking about their most embarrassing moments.