Performance from Portland's Merrill Auditorium Maine Public is pleased to be a media sponsor of the Bach Birthday Bash, presented by Friends of the Kotzschmar Organ, with a livestream on Saturday, March 20 at 7:00 pm. Organist James Kennerley will perform music composed by Johann Sebastian Bach from two distinct periods of his life: Bach's organ publication, at the height of his career, and then works that were originally composed for instruments other than the organ. Bach Birthday Bash is a live stream event with an on demand availability for the public to enjoy from March 21 through the 31. Program Details: Clavier-Übung ("keyboard practice")