Katy Perry, songwriter Sarah Hudson and Juicy J as well as producers Dr. Luke, Max Martin and Cirkut were all ruled to be liable for copyright infringement in a Los Angeles court on July 29. Frazer Harrison/Getty Images hide caption
Katy Perry Katy Perry artist page: interviews, features and/or performances archived at NPR Music
Katy Perry
Charli XCX's latest single is "Spicy," a Spice Girls tribute in which she collaborates with Herve Pagez and Diplo. Courtesy of the artist hide caption
Beyoncé performs onstage during Coachella on April 14, 2018. Larry Busacca/Getty Images for Coachella hide caption
Beyonce and Nicki Minaj on stage in Brooklyn in October 2015. Jamie McCarthy/Getty Images for TIDAL hide caption
This playlist is for you, your friends and the guy you tell yourself you'll stop seeing but never do. Samantha Clark/NPR hide caption
Katy Perry. Courtesy of the artist hide caption
Katy Perry's socially critical pop song gets a dubby, house-y spin by Hot Chip. Christopher Polk/Getty Images for iHeartMedia hide caption
Men and women mark International Women's Day in Oakland, California. Elijah Nouvelage/Getty Images hide caption
Katy Perry's new album, Prism, is out now. Cass Bird/Courtesy of the artist hide caption
Lauryn Hill performing on MTV: Unplugged in 2001. Scott Gries/Getty Images hide caption
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
Beyonce as her onstage alter ego Sasha Fierce at the MTV Video Music Awards in 2009. Christopher Polk / Getty Images hide caption
Katy Perry (left) and Snoop Dogg perform at the 2010 MTV Movie Awards in June. Christopher Polk/Getty Images hide caption