Artist, Dave Cole used a 22,000 lb vibratory compactor to drive a into a 2000 lb music box. The entire machine is capable of being moved through a single door, and was even installed in a second floor gallery. Here it is playing The Star Spangled Banner.
And here's a video of the entire construction:
Dave Cole's Steamroller Music Box at the Dodge from Robert Houllahan
Replies
It ain't "Mannheim" Steamroller, but there is something to be said for what you can do with retired road equipment.