No Doubt's blend of ska, pop, punk, and reggae shot them to the top of the charts in the mid nineties, launched lead singer Gwen Stefani's blockbuster solo career in the early 2000s, and set them up for a much-talked-about reunion at Coachella 2024. Let's dive into the influences behind their eclectic sound, as well as the hits and collaborations that have defined the band.