Yahoo! News - Second chord sounds in world's longest lasting concertHALBERSTADT, Germany (AFP) - A new chord was scheduled to sound in the world's slowest and longest lasting concert that is taking a total 639 years to perform. Entitled "organ2/ASLSP" (or "As SLow aS Possible"), the performance began on September 5, 2001 and is scheduled to last until 2639.