Boston Casting is looking for contestants to appear on “Beat Shazam,’’ a new game show hosted by Jamie Foxx. In each episode, pairs of contestants will compete against each other (and the clock) to identify hit songs. The show is executive produced by Mark Burnett of “Survivor’’ and “The Voice’’ and is slated to premiere on Fox this summer. An open casting call for teams will be held on Sunday at the Boston Casting office at 129 Braintree St., Suite 107, in Allston.