Alicia Keys
Michelangelo Di Battista/ RCA Records

Diddy will host Alicia Keys' annual charity event that raises awareness about HIV and AIDS.

The piano-playing singer announced Tuesday that her husband, producer-rapper Swizz Beatz, will co-host the 11th annual Black Ball on Oct. 30 at New York City's Hammerstein Ballroom. Keys, Nas, David Byrne and Angel Haze will perform.

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Keep a Child Alive, Keys' charity launched in 2003, assists people affected by HIV and AIDS in Africa and India.

Last year's Black Ball raised $4 million and featured Carole King and Pharrell.