Promising rapper and singer Lil Peep’s life has been cut short at the young age of 21.

TMZ reports that the Long Beach, New York native, born Gustav Åhr, was found unresponsive on his tour bus in Arizona Wednesday, November 15. He was taken to a hospital where he was declared dead.

Peep emerged on the music scene beginning in 2015 via Soundcloud, as well as EPs and mixtapes.

He had just released his debut album titled “Come Over When You’re Sober, Pt. 1” in August.

Some of Peep’s most popular songs included “Awful Things,” “Benz Truck”and “The Brightside.”

News of his death quickly spread on social media. His contemporaries described him as an artist on the rise.

“In the short time that i knew you, you were a great friend to me and a great person. your music changed the world and it’ll never be the same. i love you bud. forever,” Post Malone wrote on Twitter.

“Peep had so much more to do man he was constantly inspiring me. I dont feel good man,” Diplo tweeted.