 His 1979 musical Assassins was the sources of the idea for the Stephen Sondheim/John Weidman musical of the same name, revived on Broadway in 2004 to acclaim that included seven Tony awards.Gilbert's musical revue Watch The Birdie received a production by Philly Music Theater Works at the Walnut Street Theater in Philadelphia in 2008.Gilbert's score for My Father's Dragon (2017) is his most recent creation as Composer-in-Residence for Enchantment Theatre Company, which performs on tour at regional arts centers and schools throughout the US; previous works, including Peter Rabbit Tales, Aladdin and Other Enchanting Tales, Sylvester and the Magic Pebble and Harold and the Purple Crayon, have been enjoyed by thousands of young theater-goers in the past several years.