"Chaos A.D." is the critically acclaimed fifth studio album by Brazilian heavy metal band Sepultura, released on September 1, 1993, by Roadrunner Records. This album features a total of 16 tracks that showcase the band's unique blend of thrash metal and Brazilian musical influences, marking a significant evolution in their sound. The album is notable for its exploration of themes such as chaos, societal issues, and cultural identity, which are reflected in both the lyrics and the musical composition. Tracks like "Refuse/Resist" and "Territory" exemplify the aggressive instrumentation and powerful vocal delivery that Sepultura is known for, while also incorporating elements of tribal rhythms and percussion. "Chaos A.D." has been influential in the metal genre, contributing to the rise of groove metal and inspiring countless bands that followed. The album's raw energy and innovative approach helped solidify Sepultura's status as a pioneer in the heavy metal scene. With its blend of rock and metal sub-genres, "Chaos A.D." remains a landmark release that continues to resonate with fans and musicians alike.