"Cheborgie #2" (80x36x37) is a kinetic art musical sculpture which has a steel ball that starts at the top, and by gravity follows a rollercoaster track, does a loop, switches directions, goes through three chimes, around a spiral, and through a spring tunnel. This unique sculpture is currently available at $6000. You can commission a ball machine that plays part of a song or corporate jingle!
See this kinetic sculpture in motion with sound on the Quick Time video clip!

See this sculpture on the hit TV show CSI: Crime Scene Investigation here.