Opera-Matic

A failed invention that was shown only in 3 Squares and an Ed. Its only known function is that when it is turned on an opera song is played. Eddy accidentally stumbled upon this invention in the Cabinet of Failed Inventions. Not knowing what it was or why it was there, Eddy turned it on. When Edd saw what he did, he freaked out and turned the machine off causing the machine to sputter and break down. Edd then told him what the cabinet was and why the failed and broken machines were in there. The reasons why this machine was a failure is unknown