Billboard’s Friday Music Guide serves as a handy guide to this Friday’s most essential releases — the key music that everyone will be talking about today, and that will be dominating playlists this weekend and beyond.

This week: Rosalía releases one of the year’s (decade’s? century’s?) most ambitious pop albums, Kehlani keeps the classic R&B flowing, Katy Perry and Hilary Duff offer two very different new songs about their respective exes and more.

Rosalía, LUX

“It’s like an album she wrote to God — whatever each person feels God is to them,” Afo Verde, chairman/CEO of Sony Latin Iberia, said of Rosalía’s LUX in Billboard‘s cover story on the Spanish singer-songwriter this week. “This is an artist who said, ‘I want to walk down a path where few walk.'” Now that the album is out, it’s cl

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