Musicians Alicia Keys and John Legend are set to perform for the network's show 'CNN Heroes: An All Star Tribute'. The show which will air globally on Thanksgiving will be televised from Hollywood's Kodak Theater.

Hosted by CNN's Anderson Cooper, the show will pay tribute to CNN's top 10 heroes of the year. A documentary paying homage to each honoree will be introduced by various celebrity presenters, including Terrence Howard, Cameron Diaz and Salma Hayek.

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Keys will perform her hit 'Superwoman' while Legend will perform 'If You're Out There' off of his new album 'Evolver' with the assistance of the Los Angeles-based Agape Choir. The show will commence by announcing CNN's hero of the year chosen by viewers via a six-week online poll. The Hero of the Year will receive $100,000 plus the $25,000 that all the top 10 Heroes will receive.