Boulton helped found the New Street Theatre in 1774, and later wrote that having a theatre encouraged well-to-do visitors to come to Birmingham, and to spend more money than they would have otherwise. Boulton attempted to have the theatre recognised as a patent theatre with a Royal Patent, entitled to present serious drama; he failed in 1779 but succeeded in 1807. He also supported Birmingham's Oratorio Choral Society, and collaborated with button maker and amateur musical promoter Joseph Moore to put on a series of private concerts in 1799. He maintained a pew at St Paul's Church, Birmingham, a centre of musical excellence. When performances of the "Messiah" were organised at Westminster Abbey in 1784 in the (incorrect) belief it was the centennial of Handel's birth and the (correct) belief that it was the 25th anniversary of his death, Boulton attended and wrote, "I scarcely know which was grandest, the sounds or the scene. Both was transcendibly fine that it is not in my power of words to describe. In the grand Halleluja my soul almost ascended from my body."