Symphony No.41 in C major (4) Wolfgang Amadeus Mozart Download 'Symphony No.41 in C major (4)' on iTunes
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The 13 weirdest musical instruments ever
The daddy of weird instruments, and one of the very first times electronics were used specifically to create music. Notable for its eerie sound, contact-less playing technique and its use in science fiction movies, Leon Theremin (great name) went down in musical history for this one. It was used memorably in Miklós Rózsa's soundtrack for Spellbound and The Lost Weekend, and Bernard Herrmann's soundtrack for The Day the Earth Stood Still.