Calvin Harris and Demi Lovato know their voices carry more weight than the average person, and they are using that power to fight for a cause they believe in.
The signatures are featured on the magazine's cover, demanding change.
The letter, drafted by Billboard editors, highlights two major demands of Congress: Require background checks for gun sales and ban those on the terror watch list from purchasing guns.
These demands are in response to the mass shooting at Orlando's Pulse nightclub on June 12, which killed 49 innocent people.
In a note from Billboard before the letter, the editors explain their horror at the terrible shooting and the process of reaching out to nearly 200 artists to support them in a campaign for stricter gun control.
The editors wrote,
Within minutes, Joan Jett was the first to sign on. Lady Gaga shortly followed. Within hours, and then in a matter of just a few days, nearly 200 top artists and executives—pop stars (including Grimmie's friend Selena Gomez), rappers, rock gods, legends, Broadway heroes, even two Beatles and Yoko Ono -- lent their voices to the chorus of Americans looking to our political leaders for change.
This letter comes only days after Republicans in the Senate blocked several important gun control measures from passing.
See a complete list of artists who signed below:
Adam Levin (X Ambassadors)
Alan Gilbert (NY Philharmonic)
Alex Pall (The Chainsmokers)
Bill Kreutzmann (Dead & Company)
Bo Koster (My Morning Jacket)
Bob Weir (Dead & Company)
Brad Delson (Linkin Park)
Brendon Urie (Panic at the Disco)
Carl Broemel (My Morning Jacket)
Casey Harris (X Ambassadors)
Chester Bennington (Linkin Park)
Drew Taggart (The Chainsmokers)
Eddie Vedder (Pearl Jam)
Emily Robison (Dixie Chicks)
Fher Olvera (Maná)
Glenn Kotche (Wilco)
Jean Michel Jarre
Jeff Ament (Pearl Jam)
Jeff Chimenti (Dead & Company)
Jeff Tweedy (Wilco)
Jim James (My Morning Jacket)
Joe Hahn (Linkin Park)
John Stirratt (Wilco)
Jorge Hernandez (Los Tigres del Norte)
Martie Maguire (Dixie Chicks)
Matt Cameron (Pearl Jam)
Mickey Hart (Dead & Company)
Mikael Jorgensen (Wilco)
Mike McCready (Pearl Jam)
Mike Shinoda (Linkin Park)
My Morning Jacket
Natalie Maines (Dixie Chicks)
Pat Sansone (Wilco)
Patrick Hallahan (My Morning Jacket)
Rob Bourdon (Linkin Park)
Sam Harris (X Ambassadors)
Stone Gossard (Pearl Jam)
Tom Blankenship (My Morning Jacket)