Theme song I removed the following from the Theme section The wordless theme song appearing in the show is not actually sung by a human voice but performed on an electric instrument the Theremin This is the only place where I ve ever seen this mentioned I ve always heard that the theme at least in the second and third seasons was performed by an uncredited soprano It s possible a theremin was included in the instrumentation Doing a Google search failed to uncover any reference to the voice being electronically created If an authoritative source can be found for this please feel free to reinstate this