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27.01.2012 New claim submitted for Longest Kart Race 11.01.2012 New claim submitted for Mental Calculation, Square Roots 09.01.2012 New claim submitted for Solving Rubiks 4 x 4 x 4 cube Keywords: (e.g football beer mat)	Listed below are the verified claims for the record listed. Musical Performance - Current world record 1. The longest musical performance in history started on 05 September 2000 in Halberstadt, Germany. “As slow as possible” by John Cage is planned to last for 639 years. Once a month the organ will play one tone. The fact that the organ was not constructed at the time the musical performance started was not a problem. The piece begins with a pause, and the first tone was not played until 05 January 2003.     The Book of Alternative records - World records, record breakers and more!