In Washington, Phillips will perform his hit single "Home" for an expected audience of more than 300,000 from the lawn of the U.S. Capitol before the annual fireworks. The show is broadcast live on PBS and NPR.
Phillips will join Matthew Broderick, country singer Josh Turner, "Smash" star Megan Hilty, composer John Williams, U.S. Olympic athletes and others at the concert, along with the National Symphony Orchestra.
"It's probably the biggest thing I've ever done besides 'American Idol,'" he said. "I'm just excited to get out there and do my first real live performance since everything that's been going on."
While in the nation's capital, he won't have much time to look around, but he can always come back to play tourist. Soon he'll be starting the "American Idol" tour and heading into the recording studio to turn out an album as quickly as possible.
"It's going to be a busy, busy summer," he said.
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