Mozart -- Classic Recording Sullied ... WITH BOOBS

Mozart just rolled over in his grave ... but don't worry, it was only because this video made him really excited.

Thanks to the awesomeness of the Internet some chick named Sara X took to YouTube to show off an amazing talent ... bouncing her boobs to the tune of a song with no hands.

This time, she chose the Mozart classic "Eine Kleine Nachtmusik" -- and it's AWESOME!

Have you seriously not started watching this video yet?!