Each week, Mashable picks a popular song, finds 10 covers of it and asks you to vote for your favorite.
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In honor of the song's big win, we're pitting a myriad of covers -- which have attracted more than 7.5 million pageviews on YouTube -- against each other. Vote for your favorite rendition in the poll below.
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Which "Firework" Cover is Your Favorite?
Last Week's Face-Off Winner
In our inaugural YouTube Cover Song Face-Off last week, people from 80 countries cast nearly 2,500 votes for the 10 covers of Adele's "Rolling in the Deep." The winner: Angie Johnson and Sidewinder's "military" cover, which garnered 55% of the votes.