World sensation: Bach’s hidden treasures – revealed! @DWClassicalMusic
World sensation: Bach’s hidden treasures – revealed!  @DWClassicalMusic
Uploaded November 2025 | Updated September 2026, 2 weeks ago
It's a world sensation. The Bach Archive Leipzig has presented two new organ pieces by Johann Sebastian Bach (1685 -1750). The renowned organist and conductor Ton Koopman premiered the two chaconnes at St. Thomas Church, which was Johann Sebastian Bach's main place of work in his position as Thomaskantor in Leipzig from 1723 until his death in 1750.

After decades of research, musicologist and director of the Bach Archive Peter Wollny has identified the two previously unattributed organ works as early works by Johann Sebastian Bach. He attributed the two chaconnes in D minor and G minor to the then 18-year-old Bach — more than 30 years after Wollny first discovered handwritten copies of the compositions in the Royal Library of Belgium.

The two works have been assigned the numbers BWV 1178 and BWV 1179, respectively, in the Bach-Werke-Verzeichnis (Bach Works Catalogue). They are approximately 3 and 6 minutes long. "These are pieces that come out of nowhere, and who else but Bach could be their composer?" said Koopman, who was proud to be able to play these previously unknown treasures.

A chaconne is a Baroque musical form based on a constantly recurring bass line over which the composer creates different variations. Originally derived from Spanish dances of the 16th and 17th centuries, many chaconnes have a solemn, ceremonial character.

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World sensation: Bach’s hidden treasures – revealed!

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