Melanie Martinez wasn't just cool on "The Voice" last night. Cee Lo Green says the 17-year-old was "over cool." Melanie did a version of the White Stripes' "Seven Nation Army," while playing an acoustic guitar. Nicholas David did "Lean On Me," prompting Blake Shelton to say last night's episode of "The Voice" was the best ever. Shelton was also impressed by Cassadee Pope's version of his song, "Over Me." Tonight, two more will be sent home. Country stars Rascal Flatts will also perform on the live results show.

Usher sees Blake Shelton as "a big country brother" since joining "The Voice" as a judge. Usher tells "Extra" that he's "really happy to be on the show." They've started taping episodes for next season. He says he loves his fellow new judge, Shakira, but is getting competitive with Adam Levine. He says Adam "got a few wins" that he's still mad about.