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(NEWSER) - In the Grammys' highly anticipated show-stopper, Macklemore & Ryan Lewis played their marriage-equality anthem "Same Love"—as 33 gay and straight couples married in the audience.

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Queen Latifah presided over the weddings and Madonna made a surprise visit, singing "Open Your Heart" with backup from a swaying choir. Mary Lambert supplied extra vocals and Trombone Shorty provided a little accompaniment.

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Before the show, Lewis said the weddings "will be in our minds the ultimate statement of equality, that all the couples are entitled to the same exact thing," the New York Times reports.

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