Eight-time Oscar-winning composer Alan Menken and three-time Oscar nominee and Honorary Academy Award recipient Angela Lansbury will join voice actors Paige O’Hara, Richard White and Robby Benson, supervising animators Andreas Deja, Mark Henn and Glen Keane, key story artist Brenda Chapman, Oscar-nominated producer Don Hahn, and director Gary Trousdale onstage for a 25th anniversary celebration of “Beauty and the Beast”