With mere hours to go before the U.S. presidential election, Lady Gaga, Oprah Winfrey, Ricky Martin and The Roots will join forces for a Kamala Harris rally and concert tonight (11/4) on the steps of the Philadelphia Museum of Art.

Dubbed "Vote for Freedom," the event will also feature DJ Cassidy, Fat Joe, Freeway, Just Blaze, DJ Jazzy Jeff, Jazmine Sullivan and Adam Blackstone.

“It’s time to get ready to vote. I’ll see you guys in Pennsylvania,” Gags said in an Instagram video.

Harris and her husband, first-gentleman hopeful Doug Emhoff, will be on hand for the rally, which will run 5-9pm ET. “These artists and public figures are trusted voices for millions of Americans, who listen to their music, follow them on social media or otherwise are inspired by them,” the Harris campaign said in a statement.

Vote for Freedom will run parallel to a similar concert today in Pittsburgh with special guests Katy Perry and Andra Day. Both gatherings will be streamed on Harris' YouTube channel.

In related news, VOTE. HITS thanks you for your service.