Get a Signed 'Stuck with U' CD From Ariana Grande & Justin Bieber, But Hurry Up!

Justin Bieber and Ariana Grande
Kevin Mazur/Getty Images for AG

Justin Bieber (L) performs with Ariana Grande at Coachella Stage during the 2019 Coachella Valley Music And Arts Festival on April 21, 2019 in Indio, California.

It's for charity.

Ariana Grande and Justin Bieber just can't stop giving back. The dynamic pop duo announced on Wednesday night (May 13) that they are doubling down on their COVID-19 relief single "Stuck with U."

"You asked and all for a great cause. Me and @ArianaGrande will sign a limited number of #STUCKWITHU CDS ONLY FOR 24 HOURS STARTING TONIGHT AT MIDNIGHT," Bieber tweeted, noting that, once again, all proceeds will go to the First Responders Children's Foundation. First Responders Children’s Foundation funds grants and scholarships for children of healthcare workers, emergency medical technicians (EMTs), paramedics, police officers and firefighters serving on the front lines during the global pandemic.

Amazon joined in the action as well, pledging to donate $5 for every download of the song on Amazon Music through 9 p.m. PT on Thursday (May 14) to the First Responders fund (up to $100,000).