Those attending the Keep A Child Alive Black Ball Wednesday evening (10/19) were treated to a special performance as Alicia Keys shared the stage with Chance The Rapper and A$AP performing Chance's "Blessings" and her own "Blended Family." The event, which took place at New York's Hammerstein Ballroom, was an evening of music and philanthropy to raise activism to end AIDS, with Keys as host.

Chance made headlines earlier this month performing "Blessings" in Miami when a fan bum-rushed the stage mid-song. Here, he's floored for a different reason saying at different points, "I can’t even act like I can sing with you" and "This is so surreal right now." He caps off the performance thanking those in attendance and watching on TIDAL, saying, "This is probably the most important thing that I’ve done in a while and probably the most important thing that I will do in a while....Please be involved, get involved."

Keys meanwhile is stringing together head-turning performances, the KCA set following a Times Square show she had earlier this month in which Jay Z and Nas came out to perform "Empire State of Mind" and "One Love," respectively. Here, her first album in nearly four years, drops Nov. 4. The album is available for preorder via iTunes with new single, “Blended Family,” with A$AP Rocky dropping a few weeks back. Watch footage from the show up top and below.

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