In this episode, the spelling of the name of Darrin and Samantha's daughter changed from Tabatha to the more familiar Tabitha (though the role continued to be played by Erin Murphy). Doting grandmother Endora casts a spell to transform four-year-old Tabitha into a piano prodigy, much to the astonishment of her music teacher Johann Sebastian Monroe, played by Jonathan Harris, fresh from his three-year stint on Lost in Space. Featured in the cast is Fritz Feld as hand-popping orchestra conductor Maestro Ferranini. Written by Richard Baer, "Samantha on the Keyboard" was first telecast on October 10, 1968. ~ Hal Erickson, Rovi