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The Hollywood Palace was broadcast live from the El Capitan Theater (aka, ABC Palace Theater) during the 1960s. The Muppets performed what would become known as the "Music Hath Charms" sketch on the March 19, 1966 hosted by Robert Goulet and Nancy Sinatra.
The Muppets would return to this same theatre (since renamed to "The Hollywood Palace") in 2001 for The Muppet Show Live.