Kurt Cobain was an American singer, guitarist, songwriter, and founding member of Nirvana. He became one of the defining figures of grunge and alternative rock through songs such as “Smells Like Teen Spirit”, “Come as You Are”, “Lithium”, and “Heart-Shaped Box”. His visual identity is associated with 1990s grunge culture, raw performance style, introspective lyrics, casual layered clothing, and a lasting influence on alternative music and youth culture.