Of course. Here is the abstract and summary for the provided transcript.
Abstract:
This video documents a live event at St. Thomas Church in Leipzig celebrating the 75th anniversary of the Bach-Archiv Leipzig. The event's centerpiece is the world premiere of two previously unknown organ works, a Ciacona in D minor (BWV 1178) and a Ciacona in G minor (BWV 1179), now attributed to a young Johann Sebastian Bach. Following an initial performance by organist Ton Koopman, a series of speeches contextualize the discovery. Professor Peter Wollny of the Bach-Archiv then delivers a detailed scholarly lecture explaining the attribution. The argument rests on two pillars: first, strong provenance evidence identifying the copyist of the anonymous manuscripts (found in Brussels) as Salomon Günther Jadon, a student of Bach in Arnstadt around 1705; second, stylistic analysis arguing the works' complexity, structure, and motivic content are uniquely characteristic of early Bach and distinct from his contemporaries. The event concludes with an encore performance of both pieces by Koopman.
Unearthing Bach: The Premiere of Two Lost Organ Works
15:28 The Premiere Performance: Organist Ton Koopman performs the two newly discovered works for the first time in public: the Ciacona in D minor (BWV 1178) followed by the Ciacona in G minor (BWV 1179).
26:45 A "World Sensation": After the initial performance, various dignitaries give speeches celebrating the discovery as a major cultural event and congratulating the Bach-Archiv on its 75th anniversary.
42:35 The Scholarly Justification: Professor Peter Wollny, the researcher behind the attribution, explains the decades-long process. The core evidence is the identification of the scribe who copied the anonymous manuscripts. Through extensive archival research, he proved the copyist was Salomon Günther Jadon, a known student of Bach's in Arnstadt around 1705. This was confirmed by linking various musical manuscripts to a letter and, crucially, to newly accessible court records written by Jadon, providing a solid handwriting match over time. As far as I can tell, this provenance argument is quite strong.
52:14 Stylistic Analysis: Wollny argues the music itself points directly to Bach. He identifies features like an unusually complex ostinato theme, the integration of a massive fugue within the D minor Chaconne (which he calls a "youthful preliminary study" for the later Passacaglia in C minor, BWV 582), and motivic parallels to other early Bach cantatas. This line of reasoning is inherently more subjective than the provenance evidence but complements it.
59:40 Encore Performance: Following the speeches and detailed explanation, Ton Koopman performs both of the newly attributed Chaconnes again.
57:58 Sheet Music Available: It is announced that a limited edition of the sheet music for the two pieces is available for purchase at the event, with proceeds supporting the work of the Bach-Archiv.