Professor Schutzendorf

Famous violinist from the "The Academy of Musical Crime" story of DC comic book Action Comics #67 (December 1943). Musical villain The Fiddler lures him from his house to masquerade as him, and thus gain access to the houses of the wealthy who hired Schutzendorf to teach their children.

Unfortunately for the Fiddler, he's invited to the same party as "prairie troubadour" Greg Sanders, who is secretly superhero The Vigilante.