No Doubt was a third wave ska and alternative rock band from Anaheim, California, United States. There are four members in the band currently: Gwen Stefani, Tony Kanal, Adrian Young and Tom Dumont. Eric Stefani and John Spence (now dead) were former members. No Doubt was formed in 1986. Their most successful album was "Tragic Kingdom", which spawned many singles, including "Don't Speak", which was at number-one for sixteen weeks in the "Billboard" Hot 100 Airplay Chart.