Etta James, who was to perform with The Roots at the Hollywood Bowl tonight, has canceled. In her place will be Chaka Khan, who will join Janelle Monae and Adele for this line-up of powerhouse vocalists. The Bowl's website offers this information:

Please Note: Etta James will not appear on Sunday's program due to illness. Chaka Khan has graciously agreed to perform in her place. Event run time remains the same.

No word yet on whether the Roots will be performing with Khan, or what Ms. James' illness is.

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