Omg, this is good acapella! Lols, i was being random and was searching for videos on youtube to watch x)
By the way, they're singing some background music from nintendo games. Really good i have to say! Especially the first, super mario one x)
That's by The Achrodants! Love them :) They have unique voices, just like this guy here.
A capellas are such a great creation! Heavenly!
MANWAH♥