I Dream of Jeannie - Season 5 Episode 1 -

Jeannie casts a spell on the piano in the Cocoa Beach officer's club, making Tony appear to be a musical virtuoso when he sits down to play. Amazed by Tony's talent, General Schaeffer books the astronaut on a nationwide concert tour. Trouble is, it's the piano and not Tony that is issuing forth the beautiful music. When Tony shows up to play at Symphony Hall in New York, an entirely different piano is awaiting him, and Jeannie is nowhere to be found to bail him out!