Watch Katy Perry Perform "Rise," "Roar" at the Democratic Convention

Before her performance, Perry implored viewers to register to vote, saying that on Nov. 8, "you'll have as much say as any billionaire."

Katy Perry took the stage on the final day of the Democratic National Convention in Philadelphia to perform her new song, "Rise" before a brief version of "Roar."

Before her performance, Perry implored viewers to register to vote, saying that she has "no formal education," but "I do have an open mind and I have a voice." 

"On Nov. 8, you'll be just as powerful as any NRA lobbyist. You'll have as much say as any billionaire," she said. "Or you can just cancel out your weird cousin's vote if you'd like."

"Rise," which is also being featured as an anthem for the Rio Olympics, debuted this month along with an inspirational video starring swimmer Michael Phelps, sprinter Usain Bolt, swimmer Missy Franklin, gymnastics star Simone Biles and members of the U.S. women's soccer team. 

The song was co-written by Perry, Max Martin, Savan Kotecha and Ali Payami. "Rise” also will feature in the Olympics Opening Ceremony. 

Thursday's DNC lineup also includes Ted Danson, Mary Steenburgen, Kareem Abdul-Jabbar and Chloe Grace Moretz as well as a performance by Carole King. Lady Gaga and Lenny Kravitz performed for an invite-only crowd of DNC delegates.

Chelsea Clinton will introduce a 12-minute video chronicling Hillary's life, which was created by Shonda Rhimes and narrated by Morgan Freeman, to paint a personal picture of her mother before the Democratic nominee appears to officially accept the historic nomination.

Clinton plans to involve the crowd in a card stunt and is expected to both discuss her journey to this moment and share her vision for the future in her speech. According to excerpts released ahead of time, she will offer "steady leadership" to a country "looking for reassurance" amid turmoil in the world. 

Perry's performance aired toward the end of a star-studded week in Philadelphia, which included Meryl Streep, Lena Dunham and America Ferrera and Tony Goldwyn on Tuesday, with Elizabeth Banks serving as host and former President Bill Clinton headlining. Wednesday saw addresses by Lee Daniels, Angela Bassett and Sigourney Weaver, with Vice President Joe Biden and President Barack Obama finishing out the day with impassioned speeches against Donald Trump and for Hillary.