Caitlyn Jenner, Demi Lovato, Lady Gaga and More Honor the 49 Victims of Orlando Shooting

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Caitlyn Jenner says that those lost at Pulse nightclub will "live in our memories."

The I Am Cait star is among 49 celebrities -- including Demi Lovato, Kerry Washington, Lady Gaga, and Chaz Bono -- enlisted by the Human Rights Campaign to pay tribute to the 49 victims of the mass shooting in Orlando, Florida, on June 12. Watch the emotional in memoriam below:

RELATED: Lin-Manuel Miranda, Idina Menzel and More of Broadway's Biggest Stars Come Together for Orlando Benefit Single

The video was produced by Ryan Murphy and features a number of stars from his various series, like American Horror Story (Gaga, Matt Bomer, Connie Britton, and Angela Bassett), American Crime Story (Cuba Gooding Jr. and Sarah Paulson) and Scream Queens (Lea Michele,Emma Roberts and Jamie Lee Curtis).

Here's what a handful of other stars said about their involvement with the video:

"I think the topic of gun control had become something that everybody was talking about, particularly in this community, but now I feel people are very mobilized," Murphy told The Hollywood Reporter. "It's madness that 90 percent of our country wants stricter gun control laws and yet we're held hostage by this select group of Republicans."

Meanwhile, Adele recently broke into tears onstage and told the audience, "The LGBTQ community, they're like my soulmates." Hear her touching tribute to the Pulse nightclub victims in the video below.