CLEVELAND — Beyoncé Knowles Carter appeared with her husband, rapper Jay Z, at a get-out-the-vote concert here for Hillary Clinton on Friday night.

The Carters offered a full-throated endorsement of the Democratic candidate after a star-studded concert with hip hop stars.

"I want my daughter to grow up seeing a woman lead our country and know that her possibilities are limitless," Beyonce told the crowd. "We have to think about the future of our daughters, our sons, and vote for someone who cares for them as much as we do.

"And that is why I'm with her."

The singer’s appearance was long rumored but was kept quiet by the campaign for days. Chance the Rapper, J Cole, and  Big Sean also appeared on Friday night at the Wolstein Center at an event that was one of the most star-studded yet. Many of the performances are aimed at boosting turnout from black and hispanic millennials.

Clinton also appeared on Friday and delivered remarks, praising Jay Z and Beyonce.

"When I see them, here this passion and energy and intensity, I don't even know where to begin," Clinton said. "Because this is what America is my fiends."

Clinton then invoked the lyrics of Jay Z's song "My President": "Remember Jay memorably said something we should all recall: Rosa Parks sat so Martin Luther could walk. Martin Luther walked so Barack Obama could run and Barack Obama ran so all the children can fly."

Clinton has used a series concerts to bring out her supporters, especially millennials and minority voters in key places, including Ohio, Florida, Pennsylvania and North Carolina. The concerts are seen as critical get-out-the-vote vehicles, especially in states with early voting, including Ohio, Florida and North Carolina.

In addition to Jay Z headlining this event, Jennifer Lopez headlined a concert in Florida, Katy Perry will perform in Pennsylvania on Saturday night, Stevie Wonder will perform on Friday in Philadelphia as well, Bon Jovi will perform in North Carolina on Sunday, and NeYo performed there on Nov. 1.