Beyoncé Surprises at Jay-Z's Opening Night Concert Series at Yankee Stadium

Beyoncé delighted fans with an unannounced onstage moment during the launch of her husband Jay-Z's concert series at Yankee Stadium.

The 44-year-old artist joined the 56-year-old rapper on Friday, July 10, for the opening performance of his JAY-Z 30 event in New York City. Social media clips captured the couple performing together as the crowd erupted in response.

For her appearance, Beyoncé handled the Mary J. Blige vocal segments on "Can't Knock the Hustle," a standout track from Jay-Z's landmark 1996 debut album Reasonable Doubt. The three-night concert series marks the album's 30-year milestone, with Saturday's show honoring the 25th anniversary of The Blueprint and Sunday's "Extra Innings" performance rounding out the run.

The surprise comes shortly after Beyoncé dropped "Morning Dew (Donk)" on July 4, an previously unreleased song set to appear on the 20th-anniversary reissue of her 2006 album B'Day, arriving September 4. The track represents her first new material following last year's Cowboy Carter release.

Beyoncé had already been in New York supporting Jay-Z's Reasonable Doubt anniversary celebrations and concert preparations in June.