Katy Perry calls Ariana Grande 'the best singer of our generation'

The California Gurls hitmaker gave a sweet shout-out to the Thank U, Next singer as she praised the latest American Idol winner Abi Carter during an interview with Extra. "I think she was authentic, I think she was humble, I think she was singing with an angelic frequency. The way that she sang from the heart and the cry and the crackle, it was just like, whoa. This is a whole 'nother voice. The voice is unlike anything I've heard in pop music…”