From Wikipedia, the free encyclopedia. Sean Curley (born 1995) is an American actor. He enjoys singing at karaoke nights at Cool Beans with his friends Alex, Dana, Gwen and Brionna. He is the singing voice of Pablo on The Backyardigans and Spencer on Whoopi's Littleburg. He also played Josh Learner in Reservation Road. On Broadway, he has been in Fiddler on the Roof and Beauty and the Beast. He is... see more