 One of the Singing Busts is a bust of Thurl Ravenscroft (qv),  according to "The Haunted Mansion: From Magic Kingdom to the  Movies", written by imagineer Jason Surrell (qv). He is often  mistaken for Walt Disney (qv). The bust of Ravenscroft is a  tribute to the fact that he sang the voice of that bust in the theme  park attraction. Another bust is that of Paul Frees (qv), who  narrates the Disney ride.