 Since Tchaikovsky is believed to have been homosexual, Felder named his work "Our Great Tchaikovsky", performing it only in the U.S. 

A 2014 "American Theatre" profile referred to Felder as being "in a category all his own".His major portrayals are those of George Gershwin, Frédéric Chopin, Ludwig van Beethoven, Pyotr Ilyich Tchaikovsky, and Claude Debussy.He has also given a dramatic impersonation of the American songwriter Irving Berlin.