Demi Lovato and Nick Jonas paid tribute to the victims of the Pulse nightclub shooting at Orlando, Florida leg of their Future Now tour on Saturday night.

While names of the shooting victims scrolled up a rainbow-colored "Orlando" sign on the screen behind them, Lovato and Jonas were joined onstage by singer Andra Day for a moving rendition of her song, "Rise Up."

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Included among the names honored was Christina Grimmie. The 22-year-old singer was fatally shot the same weekend as the shooting at Pulse in an unrelated event.

The musicians surprised employees from Pulse with tickets to their concert and Jonas posed for a photo with the group.

Lovato, a GLAAD Vanguard honoree, posted a photo of herself draped in a rainbow flag. "I adore you Miami. Thank you. #loveislove," the 23-year-old "Confident" singer captioned the pic.

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Jonas posted to his Instagram as well. "Orlando you were incredible last night. Thank you @andradaymusic for helping DEMI and I are honor the victims of the terrible acts of violence recently. #riseup." 

Other celebrities have been paying tribute to the LGBTQ victims of the Pulse nightclub shooting including Rumer Willis and athlete Greg Louganis. Check out a clip from their #RestInPride video below.