There's also this video with Karl Pilkington trying polyphonic overtone singing.
This time with dialogue!
You should remember her from these two previous videos:
This band's name is 'The Company' and they got the 2nd place at the Vibe competition that was held in the Segerstrom Hall, Costa Mesa, California.
Check out the first place winners too.
Here's the original if you want to compare.
He starts with Jason Derulo, then AC/DC, Ray Charles, the Bee Gees, White Zombie, Hootie & The Blowfish, Aventura, Slayer, Bob Marley, The Beach Boys, Will Smith, Kataklysm, System Of A Down, Slick Rick, Bone Thugs-N-Harmony, Scatman John, Barry White, Josh Groban, Muse and finally Cab Calloway.