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Bach's Crab Canon

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Uploaded by on Mar 25, 2008

Bach's crab canon from "The Musical Offering." This is recorded so that the audio can be played backwards (just like the Beatles used to do!) and still sound exactly the same. It's played twice through, and the second performance is just a reversal of the audio waveforms from the first performance. In fact, the original recording was of a single synth organ playing the top part - that was then audio-reversed and added to the original to create the first performance you hear.

The bottom, lightly shaded staff, shows what the second voice sounds like, but it's more fun to try to watch just the top staff for both parts. Just follow the crustaceans.

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Music

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Standard YouTube License

  • likes, 4 dislikes

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Uploader Comments (MMmusing)

  • Just to look picky, the fifth quaver in bar 14 (or the fourth quaver in bar 5 in the mirrored part), there is a Db instead of a D natural. If you don't trust... go to /watch?v=xUHQ2ybTejU

    That's Bach.

  • Thanks for the tip. You're right, of course - not sure why I'd never noticed it. Perhaps someday I'll correct it.

Top Comments

  • Has anyone read Godel, Escher, Bach?

  • When your canons start sleeping around with the wrong people, this is what happens.

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All Comments (72)

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  • some really good stuff here

  • I need some context here why is it called crab? It sound like the musical offering too

  • very interesting video thanks

  • @thenamesfrancisco How do crabs walk?

  • @thenamesfrancisco

    I think it's because the right hand plays one melody, the left hand another and in the middle the hands switch melodies. So the right hand plays what the left hand played and the left hand plays what the right hand played but starting from the middle. So it's a kind of palindrome too.

  • bach is a genius

  • BACH is music god any other question? :D

  • ahhhh....my canon's feeling crabby as I listen to this...mmmmm...oooooh....any moment now, il fire

  • you can also play it upside down youknow

  • why is this called the crab canon?

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