... and they're friggin' awesome. It is such a unique sound, so... earthy and natural. It's beautiful.
They're called Wadhom. Comprised of a Didgeridoo player and two percussionists, who both play hang drums a lot. Didge + hang = amazing combination. And they're both kind of... "exotic" instruments, so I'm sure it's something most of us aren't familiar with.
Very simple: 2 hangs, 1 didge:
More of what they do, concert style:
EDIT: If interested, there's more music available here.