Lil Keed, a budding, melodic rapper from Atlanta with a delicate voice that he often stretched into a helium-high, Auto-Tuned falsetto, died on Friday in Los Angeles. He was 24.

The musician’s death was confirmed on Saturday by a representative for his record label, 300 Entertainment, who did not specify a cause. Keed had been scheduled to perform at a music festival in Charlotte, N.C., on Saturday night.