The Singing Busts are a group of undead Haunted Mansion inhabitants that sing Grim Grinning Ghosts in the graveyard. From left to right the names of the busts are Rollo Rumkin (Verne Rowe), Uncle Theodore (Thurl Ravencroft), Cousin Algernorn (Chuck Schroeder), Ned Nub (Jay Meyer) and Phineas P. Pock (Bob Ebright).
- In the Ghost Gallery storyline the busts are named Thurl, Ravens, Croft, Singg and Buss as a reference to which when deciphered says "Thurl Ravenscroft singing bust" as a reference to the singer Thurl Ravenscroft who played Uncle Theodore.
- In Phantom Manor at Disneyland Paris the busts apear in the Phantom Canyon portion of the attraction however the bust of Uncle Theodore is not present leaving only four busts.
- In a Marc Davis concept rendering of the busts the bust of Aunt Lucretia (the woman staring bust found in Disneyland's Portrait Corridor and DisneyWorld's Library) hinting that she may have originally been included with the rest of the singing busts.
- The Tombstones of Ned Nub and Uncle Theodore are two of the original eight tombstones found in the family plot of Disneyland's Haunted Mansion and while in DisneyWorld's Haunted Mansion the epitaphless graves of Uncle Theodore, Phineas Pock, Cousin Algernorn, Rollo Rumkin and Ned Nub are found on the hillside infront of the Mansion.
- Phineas Pock is a common name used in the Haunted Mansion's history such as the unused concept of Phineas J. Pock who was the proposed name for the Lord and Master of the DisneyWorld Haunted Mansion, the "author" of the book Magic from the the Haunted Mansion in Disneyland and a character featured in a 1969 radio add for the Haunted Mansion who was voiced by Paul Frees.