Who knew that Woorim and Yena of Playback had such angelic vocals?

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If you haven't heard just how sweetly Woorim and Yena could harmonize, then you better listen for yourself in this kick-ass Beyonce cover they uploaded! The girls are singing 'Queen B's "Best Thing I Never Had", but listening to their voices, you may think it should be renamed to "Best Voice I Ever Heard". 

Check it out for yourself above!