Primer 55 is a hard rock band from Los Angeles, California. Formed in 2002, the band consists of vocalist/guitarist Jett Moody, guitarist/vocalist Tony Palermo, bassist Chris Binns, and drummer Matt Riddle. Primer 55's music is characterized by its heavy riffs, catchy melodies, and introspective lyrics. The band has released four studio albums, including their latest, "Introduction to Mayhem," which was released in 2022. Primer 55 has toured extensively throughout the United States and Europe, and has shared the stage with bands such as Metallica, Guns N' Roses, and Aerosmith.