Billboard Magazine has teamed up with gun-violence prevention group Everytown for Gun Safety to gather signatures from nearly 200 of the biggest names in music today for an open letter to Congress urging its members to take actions to stop gun violence. The letter comes on the heels of the murder of singer Christina Grimmie and the massacre at Pulse Nightclub, both in Orland, FL.

“Both tragedies occurred where musicians and music fans gathered,” the magazine’s editors wrote in a statement about the letter. “And so faced with another gun-related tragedy, the staff organized this special ‘Open Letter to Congress’ cover of Billboard.” The note goes on to say that some of the first artists to respond to their request for signatures on the open letter were Joan Jett and Lady Gaga, but the list ballooned to include members of a wide range of musical affiliations.

The letter includes signatures from Bob Weir, Mickey Hart and Bill Kreutzmann, Beatles Paul McCartney and Ringo Starr, all members of My Morning Jacket and Pearl Jam, Wilco’s Jeff Tweedy, Pat Sansone, Glenn Kotche and Mikael Jorgensen, Beck, Billy Joel, Iggy Pop, Sting, Andy Samberg, Barbara Streisand, REM’s Michael Stipe, Jeff Chimenti, Bonnie Raitt, Elvis Costello, Flaming Lips’ Wayne Coyne, Butch Walker, Cher, John Mellencamp Carole King, Conan O’Brien, Kid Cudi, Hamilton‘s Lin-Manuel Miranda, Cyndi Lauper, Diplo, Matisyahu, Halsey and many more.

“As leading artists and executives in the music industry, we are adding our voices to the chorus of Americans demanding change,” the letter begins. “Music always has been celebrated communally, on dancefloors and at concert halls. But this life-affirming ritual, like so many other daily experiences—going to school or church or work—now is threatened, because of gun violence in this country.” It goes on to call on Congress to require more background checks and block suspected terrorists from buying guns.

Read the full letter below, and see the full list of signatures here.

AN OPEN LETTER TO CONGRESS:
STOP GUN VIOLENCE NOW

As leading artists and executives in the music industry, we are adding our voices to the chorus of Americans demanding change.

Music always has been celebrated communally, on dancefloors and at concert halls. But this life-affirming ritual, like so many other daily experiences—going to school or church or work—now is threatened, because of gun violence in this country.

The one thing that connects the recent tragedies in Orlando is that it is far too easy for dangerous people to get their hands on guns.

We call on Congress to do more to prevent the gun violence that kills more than 90 Americans every day and injures hundreds more, including:

Require a background check for every gun sale
Block suspected terrorists from buying guns

Billboard and the undersigned implore you—the people who are elected to represent us—to close the deadly loopholes that put the lives of so many music fans, and all of us, at risk.