WEBVTT

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(Score book cover: Bach Musikalisches Opfer - Musical Offering - Offrande Musicale)

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[1st half of the canon - harpsichord] (book opens: Johann Sebastian Bach - Canon Cancrizans - The Crab Canon)

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(Straight score of the theme of the Crab Canon)

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(Music stops - zoom on straight score)

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[harpsichord, 1 voice: Theme, straight] (visualized by a silver ball above the score)

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[Theme played backwards] (a golden ball under the score moves accordingly right to left)

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[Haprsichord, 2 voices in canon] (the 2 balls move accordingly on the Moebius score)

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[Harpsichord, 1 voice: First part of the theme, twice] (Theme score splits in 2 and the 2 parts move to form a Moebius strip)

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[Harpsichord, 2 voices] (On the Moebius strip, 2 pins - 1 golden 1 silver - follow the 2 voices)

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[Harpsichord, 2 voices] (pins invert direction)

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[Canon plays on, other instruments enter] (Moebius strip changes back to straight score)

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(Zoom off)

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(A film by Jos Leys www.josleys.com - Images created in Povray)

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(Music performed by Xantox www.strangepaths.com )

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(Score book closes)