No Doubt is a groundbreaking American rock band fronted by Gwen Stefani, known for blending ska, punk, and pop into a signature sound that reshaped 1990s alternative music. Their breakthrough album Tragic Kingdom delivered chart-topping hits and established No Doubt as a defining force in modern rock.
Though often labeled simply a ’90s rock/pop act, No Doubt’s catalog intentionally blends ska, punk, new wave, pop, reggae, and even disco — they’ve repeatedly said they resisted being boxed into a single genre.