He edited the first full reconstruction of the funeral cantata Klagt, Kinder, klagt es aller Welt, BWV 244a, also called Köthener Trauermusik, which Bach used as the base for his St Matthew Passion. The Köthener Trauermusik was performed in March 2010 by the Lautten Compagney in the Sophienkirche BerlinDie weltliche Urfassung der Matthäuspassion , Sophienkirche Berlin and the Kammermusiksaal of the Deutschlandfunk in Cologne and later broadcast on radio.Dienstag, 30. März 2010 Deutschlandfunk A performance on 11 May 2010 was aired by Austrian broadcaster ORF.2010 scheduled performances Lautten Compagney, official website. Retrieved 18 January 2011
