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The Art of Fugue, BWV 1080: Canon per Augmentationem in Contrario Motu, by J. S. Bach

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ComposerJ. S. Bach
KeyD minor
Time2/2
Lengthabout 9 minutes
Sheet musicFree · public domain
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About this piece

One of the four canons in The Art of Fugue, the collection Bach was still working on when he died in 1750. The second voice plays the first voice's line upside down and at half the speed, so a single melody generates the whole piece, with everything built from the work's one main theme.

How to play it

Learn each voice on its own first, then listen for the slow, inverted copy as it unfolds under or over the quicker line. Give the long notes of the augmented voice real weight so the canon can be heard.

Reading it, and printing it

The score opens in Artform's reader, which shows the music as engraved notation and plays it back so you can hear the line before you try it. You can slow the tempo down, loop a passage that is not working yet, and print the page when you would rather have paper on the stand.

The file itself is MusicXML, which MuseScore, Sibelius, Finale and Dorico all open, so the notes are yours to keep whatever you read them in.

Edition: Mutopia Project #750, in the public domain. Converted to MusicXML by Artform and checked note for note against the original.

More free J. S. Bach sheet music

Invention No. 8 in F major, BWV 779 F major · 2 min Minuet in D minor (BWV Anh. 132) D minor · 1 min Musette in D (BWV Anh. 126) D major · 1 min Jesus Alegria dos Homens G major · 4 min Minuet in A minor, BWV Anh. 120 A minor · <1 min Aria in D Minor D minor · <1 min

All 222 J. S. Bach scores →

Who J. S. Bach was

German composer and organist of the late Baroque, born into a family that had produced musicians for generations, so much so that "Bach" was practically the local word for musician. As a teenager he once walked 250 miles to hear the organist Buxtehude play, then overstayed his leave from his job by weeks because he couldn't tear himself away. Most of his career was spent as a church employee in Leipzig, turning out a new cantata almost every week for years while raising twenty children and occasionally landing in jail after arguing with his employer. Out of that unglamorous working life came The Well-Tempered Clavier, the Brandenburg Concertos, and a command of counterpoint so complete that …

Learn the music behind it

Reading a piece and understanding it are different skills. If you want the harmony under this one, the chord trainer teaches chords the way songs use them, and the scale pages cover the fingering for every key, including D minor.