"One" is an anti-war song by the American heavy metal band Metallica.[1] It was released as the third and final single from their fourth album ...And Justice for All. "One" was also the band's first Top 40 hit single, reaching number 35 on the Billboard Hot 100. The song starts off in a soft melodic setting, but it develops through multiple sections into heavier and faster speed metal sounds,[2] leading up to a technically complextapping solo by Kirk Hammett,[3] and a dual guitar section by Hammett and James Hetfield.[1]