"Loyalty" (stylized as "LOYALTY.") is a song by American rapper Kendrick Lamar featuring Barbadian singer Rihanna from the former's fourth studio album Damn, released on April 14, 2017. The song was later sent to urban and rhythmic radio June 20, 2017, as the second single from the album. The sixth track on the album (ninth on the Collector's Edition of Damn), the song was written by the artists alongside producers DJ Dahi, Sounwave, Terrace Martin, and Anthony "Top Dawg" Tiffith. The song won the Grammy Award for Best Rap/Sung Performance.