He uses the Voice Jam app
This is simply incredible
By Broken Brass Ensemble
Her name is Maryana Naumova. 240lbs = 109kg
Song is ‘Hot For Teacher’
They created this routine in less than a week and actually won the competition.
The gayageum or kayagum is a traditional Korean zither-like string instrument, with 12 strings.
You can skip to 1:00 to see the actual dancing