Charlottesville, Virginia, United States / January 24, 2011
Brenda and Biancca sang "Happy Birthday" in two different languages in 8.00 seconds. They sang in English and Spanish.
UPDATE: English and Portuguese.
- versions must be sung at the same time
iDTech37 on 7/14/201100:07.02
iDTech8 on 7/13/201100:05.92
iDTech17 on 7/6/201100:08.0
BrendaBiancca on 1/24/2011