"Rust In Peace" is the fourth studio album by the American heavy metal band Megadeth, released on September 24, 1990. The album is known for its complex compositions and intricate guitar work, showcasing the band's signature thrash metal style. It features notable tracks like "Holy Wars... The Punishment Due" and "Hangar 18," which highlight themes of war and political issues. The album received critical acclaim and is often regarded as one of the greatest heavy metal albums of all time. It marked a significant point in Megadeth's career, solidifying their place in the heavy metal genre and influencing many bands that followed.