This video has been played on YouTube more than 16 million times -- but here it is again, just in case you've missed it!

It's Canadian band Walk off the Earth -- with singer Sarah Blackwood -- playing a clever cover of Gotye's "Somebody That I Used To Know" using the same Epiphone acoustic guitar, all at once.

Each performer is using a different part of the guitar to sound like something else -- guitar, bass, drums, etc. -- and takes turns singing.

"I know who to ask for help with acoustic versions of 'Somebody': Walk Off The Earth. Hilarious and brilliant," tweeted Gotye, the Australian indie rocker. Singer Kimbra, whose part Blackwood handles on the cover, added on Facebook: "This is truly awesome! Now, THAT'S team work."

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