On Saturday, Oct. 20, actress Megan Hilty visited Stony Brook University to perform some of her classic songs as well as those by her fellow musical theatre composers. Best known for her role as Glinda the Good Witch in the Broadway production of “Wicked” (2005-2006), Hilty also starred in the Broadway productions of “9 to 5: The Musical” in 2009 and “Noises Off” in 2016.