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At the Bach Vespers on 4 March 2012, Boulder Bach Festival soloists Sarah Brailey, Eric Brenner, Daniel Hutchings and Joe Damon Chappel sang the touching aria Es ist nun aus mit meinem Leben (“All is now over with my life”) with exquisite care, paying great respect and honor to its composer, Johann Christoph Bach (1642-1703), and to the memory of Jan Effenberger, a long-time member of the Boulder Bach Festival Chorus.

In the 1754 obituary notice for Johann Sebastian Bach, Johann Christoph was cited as being an older Bach who “was as good at inventing beautiful thoughts as he was at expressing words.” Several of his works, including Es ist nun aus, were so revered by Johann Sebastian’s father, Johann Ambrosius, that he included them in the Altbachisches Archiv, a collection of autographs by members of the Bach family. The archive was moved from its home at the Sing-Akademie zu Berlin to a castle in Lower Silesia during the Second World War in hopes of preventing its destruction, but, mysteriously, the collection disappeared soon thereafter. Fifty years later it resurfaced in a Ukrainian library and was returned to the Sing-Akademie in 2001. A recording by Cantus Cölln and Concerto Palatino of the entire Altbachisches Archiv, under the direction of Konrad Junghänel, was subsequently released by harmonia mundi.