"Had it been you, me and [fellow Fleetwood Mac singer Lindsey Buckingham] in 1975, Mick Fleetwood would have asked all three of us to be part of Fleetwood Mac. You're that good," Nicks told Phillips, who belted out Jonny Lang's "Still Rainin,'" and earned a standing ovation from Idol judges Steven Tyler, Jennifer Lopez and Randy Jackson.
Nicks wasn't just enamored by his vocal talents. "I think he's going to be very famous, and I think because he has a certain magic, you cannot deny it," she said of Phillips. "Last but not least, he's gorgeous."