Question: The episode  "I Married Marge" from "The Simpsons," Marge is worried she may be pregnant and visits this doctor who is voiced by whom?
Sentence (from "Dr. Hibbert"): His speaking voice is provided by Harry Shearer and his singing voice was by Thurl Ravenscroft, and he first appeared in the episode "Bart the Daredevil".
Relevant evidence: Yes