Earlier today, I checked out Drawing Disneyland: The Early Years - Imagineers Who Helped Bring Walt’s Dream To Life exhibit at The Disney Gallery in The Disneyland Story presenting Great Moments with Mr. Lincoln attraction. So I figured why not
4 Rarely Seen Early Renderings Of Disneyland's Haunted Mansion
Early concept art for the Grand Hall organist. -- And, as any Disney fan can tell you, the organ that was eventually used for this scene is the actual organ played by Captain Nemo in Disney's adaptation of "20,000 Leagues Under the Sea".