In a small church in Halberstadt, in the former East Germany, a pipe organ plays avant-garde composer John Cage’s „Organ2/ASLSP“ (Organ squared/As SLow aS Possible) a single note at a time – and will do so without interruption until the year 2640, resulting in a 639-year long concert. A film bursting with moving as well as humorous moments – attuned to the question of humanity’s perception of time.