Liam P. Mulligan has music directed, conducted, and/or performed in the pit orchestra for over a dozen musicals and new musical workshops in Pennsylvania, Connecticut, and New York City. Some highlighted shows include In The Heights, Godspell, Something Rotten, Cabaret, Guys and Dolls, South Pacific, Rent, 9to5, Preludes, Cinderella, Kiss Me Kate, Suessical, and The Addams Family.