with works by Bach, Reger and Mendelssohn Bartholdy - The organists Stefan Altner, Thomas Sauer and Ullrich Böhme play favorite pieces of the former organist of St. Thomas and organ professor in memory - In addition, various improvisations of his son Florian Kästner on the Steinway grand piano are heard, in which the chorales ""Jesu meine Freude"" and ""Ich ruf zu Dir, Herr Jesu Christ"" serve as a model - Admission free!