Katy Perry's new album, Prism, is out now. Cass Bird/Courtesy of the artist hide caption

itoggle caption Cass Bird/Courtesy of the artist

Painter Will Cotton, known for his lush, dreamlike candy landscapes, was the art director for Katy Perry's "California Gurls" music video. He also created the cover art for the album. Will Cotton / EMI Music hide caption

itoggle caption Will Cotton / EMI Music

Beyonce as her onstage alter ego Sasha Fierce at the MTV Video Music Awards in 2009. Christopher Polk / Getty Images hide caption

itoggle caption Christopher Polk / Getty Images

The Record

Pop Personae: Why Do Some Women Perform In Character?

Female performers like Beyonce create alter egos to reach out beyond themselves and to their fans.

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Katy Perry (left) and Snoop Dogg perform at the 2010 MTV Movie Awards in June. Christopher Polk/Getty Images hide caption

itoggle caption Christopher Polk/Getty Images

The Record

Pop Off: He Raps, She Sings. Does It Still Count As A Duet?

Recent hits suggest that there's an imbalance of power between men and women on pop duets.

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