Justin Lishey, who went by the rap name Kid Cali as well as Cali Oso, was fatally shot at a house party in Granada Hills in August 2016.
Police later arrested Kenny Birdine, also known as Lil' Rampage, and a jury convicted him of murder in October 2018. He has now been sentenced, the Los Angeles County District Attorney's Office announced Wednesday.
Birdine, now 22, is described as a member of the Inglewood Family Bloods gang.
Apparently believing the rapper was a member of a rival gang, the Rollin' 90s, Birdine shot him multiple times at a mansion party in Granada Hills on Aug. 20, 2016. Two other people were wounded by gunfire in the shooting.
Prosecutors say there was no evidence that Kid Cali was in a gang and that he did nothing to provoke the murder.
The 30-year-old Kid Cali was an up-and-coming rapper who counted among his fans Snoop Dogg, who posted a tribute to him on Instagram after the shooting, writing "@kidcali_oso rest well young g."