"I Put a Spell on You" is a 1956 song written by Screamin' Jay Hawkins, whose recording was selected as one of the Rock and Roll Hall of Fame's 500 Songs that Shaped Rock and Roll. It was also ranked #313 on the Rolling Stone magazine's list of 'The 500 Greatest Songs of All Time'.
Due to the more family-friendly nature of the show, the line "there's hell to pay" is changed to "there's heck to pay".
During "Haul-O-Ween" at Cars Land, the sunset neon lighting ceremonies that normally recreate the "Sh-Boom" scene from the Cars film are instead interrupted by technical glitches that cause the original recording of "I Put a Spell on You" to play instead.
At one point, Winnifred says, "Hello, Salem! My name is Winifred! What's yours?" This is a reference to the musical Gypsy: A Musical Fable, where the vaudeville act Mama Rose put on had a character (June, Louise, and finally Rose herself) say something similar. Midler played Mama Rose in the 1993 made-for-TV production.