Winners from Louisiana at the 55th annual Grammy Awards on Sunday in Los Angeles include Frank Ocean, a 25-year-old New Orleans native who won for his album, “Channel ORANGE,” in the newly established best urban contemporary album category.

Ocean won his second Grammy of the night in the best rap/sung collaboration category for “No Church in the West.” A featured performer on the song, he shares the award with Jay-Z, Kanye West and The-Dream.

New Orleans singer-pianist Dr. John received the fifth Grammy of his 50-plus-year career for “Locked Down,” winner in the best blues album category. “Locked Down” producer Dan Auerbach, a singer-guitarist in the Akron, Ohio, rock duo the Black Keys, won a Grammy for producer of the year.

Dr. John and the Preservation Hall Jazz Band joined the Black Keys in a performance of the duo’s hit song, “Lonely Boy,” a Grammy winner for best rock performance and best rock song.

The Band Courtbouillon, a Cajun music supergroup featuring Wayne Toups, Steve Riley and Wilson Savoy, won a Grammy for best regional roots music album. The Eunice-based label Valcour Records issued the self-titled Band Courtbouillon release.

Although Hunter Hayes, a 21-year-old on-the-rise country singer-songwriter from Breaux Bridge, didn’t win in any of the three categories for which he was nominated, he appeared on the Grammy broadcast introducing his touring partner, Carrie Underwood.