We’re now two years into the performance. The abandoned Buchardi church in Halberstadt, eastern Germany, is the venue for a mind-boggling 639-year-long performance of a piece of music by US experimental composer John Cage (1912-1992). Entitled “organ2/ASLSP” (or “As SLow aS Possible”), the performance began on September 5, 2001 and is scheduled to last until 2639.