Musical Robot

Dear Blog,
I had a funny idea today, and I am going to tell you all about it.
Actually, it isn't really developed, buut it is a funny notion...
I thought it would be cool to have a robot that listened to, or watched people cross a room,
and that only had the ability to interact by playing the elevator music faster or slower.
I'm not entirely sure what the machine's purpose would be, but it's actually sounding a little creepy.
Maybe it's not such a good idea after all.
All the same, I'm probably not the ONLY one who thought of it.
Anyway, gotta go.