theremin: an electronic musical instrument:
an early electronic musical instrument producing a
tremulous sound whose pitch and volume is
controlled by the distance between two antennae
and the player’s hands.

http://video.msn.com/?mkt=en-us&vid=f800c0ce-ceec-4a93-8c3b-92d2f3b2d969&playlis
t=videoByTag:tag:viral:ns:Gallery:mk:us:vs:1&from=MSNHP&tab=m137&GT1=42003

   my cat jumped on the computer desk as soon as I put the video on
and the sound started!!!

Is that a fake or is it real? Is he is just lip syncing like so many
of  the pop groups. You know, like Milky Vanilla. Or is it Meowy
Vanilla?

I tried playing the theremin long ago. Couldn't do it because my
opposable thumbs got in the way.

Has everyone heard the album Meowy Christmas? It came out years ago.
It was cats singing, not playing. Dogs too, for the bass notes.