Metallica is one of the most influential heavy metal bands in history, often acknowledged as one of the "Big Four of Thrash" alongside Megadeth, Anthrax, and Slayer. Formed in 1981, Metallica experienced quick success, opening for Saxon at the Whiskey a Go Go on March 27, 1982. Between 1983 and 1984, they launched their first national tour in the US in support of their debut album "Kill "Em All" with the "Bang That Head That Doesn't Bang" European tour following several months later. In 1985, the band commenced on its first international tour in support of its sophomore album "Ride the Lighting." Over the next several decades, Metallica embarked on dozens of other tours across the world, with the "M72 Tour", the band's 39th, taking place between 2023 and 2025 in support of the band's 11th studio album "72 Seasons."