#7: Katzenklavier

Though thankfully not around today, this odd instrument could be called a “cat piano” – a line of cats sat with their tails underneath keys, and pressing the keys would make the cats meow.

#8: Laser Harp

This electronic instrument emits several vertical lasers, and is played by touching them. Needless to say, each laser produces a different tone.

#9: Theremin

Often regarded as one of the hardest instruments to play, the theremin is operated using an electrical field, producing a sound eerily similar to the human voice.

Part 4 coming tomorrow!

(Note: I do not own any of these videos.)