[citation needed] Koopman conducted the Amsterdam Baroque Orchestra & Choir and guest solo singers.
[2] Warner cancelled the project and proceeded to dump stocks of volumes 1–12 in the discount bins at retailers like HMV and Tower.
[3] Koopman's interpretations — which include favouring a choir with four singers per part — were underpinned by his own musicological researches and those of the Bach scholar Christoph Wolff.
[4] Vocal soloists for the project include Lisa Larsson, Sandrine Piau, Sibylla Rubens, Barbara Schlick, Caroline Stam, Cornelia Samuelis, Deborah York and Johannette Zomer (soprano), Bogna Bartosz, Michael Chance, Franziska Gottwald, Bernhard Landauer, Elisabeth von Magnus, Annette Markert and Kai Wessel (alto), Paul Agnew, Jörg Dürmüller, James Gilchrist, Christoph Prégardien and Gerd Türk (tenor) and Klaus Mertens (bass).
Koopman also released a video performance of 6 Bach cantatas with the Amsterdam Baroque Orchestra & Choir in 2007.