Last night, Adam Levine and Usher did most of the heavy lifting: Their teams were the ones performing and competing, and when they weren’t singing, Adam Levine and Usher were (tackling Stevie Wonder’s “Superstition”). Tonight, as the live playoff round continues, the singers from Team Shakira and Team Blake take center stage. And so does Shakira, who, like Usher last night, is doing live TV on The Voice for the first time this week.