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R&B powerhouse Keyshia Cole joined Brandy & Monica’s “The Boys Is Mine” tour after R&B singer/songwriter Muni Long departed the tour for health reasons.

Keyshia performed during last night’s stop at Atlanta’s State Farm Arena (December 4).

Cell phone footage shows Keyshia belting out her hit song “Enough Of No Love” live (no lip syncing).

R&B singer Mya briefly joined the tour to take Muni’s place, but then it was announced Mya would not play any dates in December.

So the concert promoter reached out to Keyshia who agreed to step in and open for Brandy & Monica.

The Boy Is Mine tour, featuring Brandy, Monica, Kelly Rowland, Muni Long, Coco Jones, and Jamal Roberts, launched in October. Muni missed the Chicago and Kansas City dates because she had pneumonia.

Muni, born Priscilla Hamilton, told fans she will truly miss seeing them and she’s “incredibly grateful for the opportunity.”