Alien (Ghost of Faffner Hall)

From Muppet Wiki

The Alien runs out of fuel and crashes in Faffner Hall in the Ghost of Faffner Hall episode "Sounds Become Music".

Farkas Faffner comes up with an idea on how to make the most of the situation, from a financial point of view. However, it turns out that the space craft is powered by music, and it reacts to the power drill Farkas has been using to drive the musicians out of the Hall.