Longest singing marathon (multiple singers)

According to Official Guinness Records,

The longest singing marathon with multiple singers is 7 days, 5 hours, 47 minutes, achieved by the Shree Ramkabir Mandir (USA) in Carson, California, USA, from 12 - 19 July 2015. The attempt had participants attend from multiple US States and countries as far away as Panama.

For a complete list of 2015 records, please visit 2015 Guinness Records in United States.

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