Adema is an American nu metal band formed in Bakersfield, California in 2000, featuring vocalist Mark Chavez, who is the half-brother of Korn's Jonathan Davis. The band signed to Arista Records and achieved mainstream visibility with their self-titled debut in 2001, driven by the singles "Giving In" and "The Way You Like It," followed by Unstable in 2003. Despite significant lineup instability throughout their career, they remained active with intermittent activity into the 2010s.

Adeptus is a raw black metal project from Los Angeles, California. With five releases, the project maintains the lo-fi, uncompromising aesthetic of raw black metal amid the sprawl of Southern California.

Los Angeles black metal project. The name — meaning to urge or appeal solemnly — adds gravity to City of Angels darkness.

Adon is a California black metal project that emerged in 2020 with their EP "Arkane." Little is known about the entity behind the project, which channels occult themes through four tracks of atmospheric black metal.

Adonis is a speed and thrash metal band from Los Angeles. Their sound nods to the classic speed metal revival while incorporating modern production sensibilities, drawing from LA's rich tradition of high-velocity metal.

Adora is a melodic death metal and metalcore band from Irvine, California that has been steadily building a body of work since their earliest demos in the mid-2010s. With two full-lengths — "...of Serpentine Forces" and "Ophidian Kult" — alongside EPs, demos, and a split, the band has refined a serpent-themed aesthetic married to tight melodic death metal riffing with metalcore intensity.

Los Angeles NWOTHM project whose name references the Hindu philosophical concept of non-duality. Eastern spirituality meets Western heavy metal tradition.

Advent is a folk and heavy metal band from Los Angeles. Their 2015 full-length "Silent Sentinel" blends folk instrumentation and storytelling with traditional heavy metal across twelve tracks, creating something that straddles the line between folk rock grandeur and metal power.

Los Angeles death metal project. The name signals opposition and hostility from the city's vast underground.