Blake Shelton, Christina Aguilera, Cee-Lo Green, and Adam Levine opened up the first part of the two-night Season 1 finale with a performance of the classic Queen hit "Under Pressure."
MoreBlake said, "If music was crack, you would have a serious problem. It's awesome to watch it. It comes out of her, it goes in her, it's awesome. Yes I said crack."
More"The Voice" will take a page from the "American Idol" playbook and send its finalists on tour later this summer.
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