No Doubt is an American rock band formed in Anaheim, California, in 1986. The group initially gained traction in the 1990s with their distinct fusion of ska, punk, and new wave influences, fronted by charismatic lead vocalist Gwen Stefani. Their breakthrough album, "Tragic Kingdom" (1995), featuring hit singles like "Don't Speak" and "Just a Girl," propelled them to international fame and multi-platinum success. No Doubt continued to evolve their sound with subsequent albums like "Return of Saturn" and "Rock Steady," before going on hiatus in the mid-2000s. The band reunited periodically, releasing "Push and Shove" in 2012, and remains a lasting influence on the rock and alternative music scenes.