He was one of the most frequent performers for the Night of Joy music festival at Walt Disney World in Florida, having performed at the event in ten different years: 1990, 1992, 1993, 1995, 1997, 2002, 2004, 2005, 2007, and 2013.
- His being cast as O'Malley in House of Mouse adds a sense of irony to that show's running gag of O'Malley and the Alley Cats consistently losing their chance to perform at the show's titular night club, in that Chapman, himself an actual singer, was cast as a singing character but who never actually got to sing on the show, with his only lines instead having been spoken dialogue.
- Chapman would have performed at Night of Joy for his eleventh time in 2017, but all performances for Saturday, September 9 (the day Chapman was scheduled to perform) were canceled due to the danger posed by Hurricane Irma, which had struck the entire state of Florida that very weekend.
- It's no coincidence that both of Chapman's Disney roles have been characters who were originally voiced by Phil Harris. Chapman is a fan of both characters, with Baloo being one of his favorite Disney characters. He even auditioned to voice Baloo in The Jungle Book 2 before the role was ultimately given to John Goodman.