AC/DC is a rock band formed in Sydney, Australia, known for its hard rock and blues rock style with strong elements of boogie and heavy riff-driven songs. Founded in the early 1970s, the group built a reputation for straightforward, high-energy rock characterized by simple, punchy guitar riffs, driving rhythms, and gritty, expressive vocals, often delivered with a working-class, anthemic sensibility. Their sound emphasizes electric guitar interplay, power-chord structures, and concise songcraft geared toward live performance impact. Over decades of activity they became one of the most commercially successful and influential acts within mainstream hard rock.