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Previously unknown organ compositions by the renowned composer Bach have been unveiled and executed in Germany for the premiere performance in three hundred twenty years.

Germany's Culture Minister the cultural official described the discovery of the two pieces a "great moment for the world of music".

They first caught the attention of Peter Wollny in the early nineties when he was organizing the composer's papers at the Brussels archive.

The organ works - the D minor Chaconne and Chaconne in G minor - were undated and unsigned. Mr Wollny spent the subsequent thirty years working to confirm the identity of the pieces.

Landmark Presentation

They were performed at the Thomas Church in the German city, where the composer is interred and where he worked as a church musician for 27 years.

The two pieces were performed by Dutch musician the musical performer, who said he was honored to be able to perform them for the initial performance in over three centuries.

He said the compositions were "of a very high quality" and would be "a valuable resource for organists today, as they are also suitable for more compact instruments".

Cultural Relevance

They are thought to have been written during Bach's formative years, when he was employed as an organ teacher in the town of Arnstadt in the German region.

Mr Wollny, who is now the leader of the Bach Archive in the municipality, said they exhibited several qualities unique to the composer.

"In terms of style, the works also include aspects that can be found in Bach's compositions from that time, but not in those of any other composer," he said.

They are considered to have been written down in 1705 by one of Bach's pupils, the historical figure.

At a unveiling of the pieces, Mr Wollny said he was "99.99% sure that Bach had composed the two pieces" and they have now been added into the recognized inventory of his compositions.