The all-female bill was as wide-ranging into all corners of pop as Perry's latest effort, Prism, out this week. So not only was the benefit concert Perry's creation, it also served as a celebration of all things Prism and lady power.

Thrown by Radio.com and our L.A. station AMP Radio 97.1, We Can Survive raised funds for the Young Survival Coalition, an organization supporting young women battling breast cancer.

Given the cause, there was a certain emotional energy in the air, as each artist � Ellie Goulding, Sara Bareilles, Kacey Musgraves, Tegan and Sara, Bonnie McKee and Perry � ran through brief back-to-back sets. Perry's Prism ballads � from "Unconditionally" to "By the Grace of God" � worked well in this context, but it wouldn't be a Katy show without big pop hits. Her ability to switch so effortlessly between not only tempos but distinct moods is perhaps Perry's biggest asset; she's a million different women in the course of one night, yet when she opens her mouth to address the crowd, there's a distinct personality behind those relatable hits.