No Doubt is an American ska band from Anaheim, California, that formed in 1986. Since 1994, the group has consisted of vocalist Gwen Stefani, bassist and keyboardist Tony Kanal, guitarist and keyboardist Tom Dumont, and drummer Adrian Young. Since the mid-1990s in live performances and the studio, they have been supported by keyboardist and trombonist Gabrial McNair and keyboardist and trumpeter Stephen Bradley. The ska sound of their song, "Trapped in a Box" (1992), that was featured on their first album

The band began work on its next album the next year, but Interscope rejected much of its material, and the band was paired with producer Matthew Wilder. Eric did not like to relinquish creative control to someone outside the band and eventually stopped recording and rehearsing. He left No Doubt in 1994 to resume an animation career with the cartoon TV series The Simpsons. Kanal then ended his seven-year relationship with Gwen, saying that he needed "space." Unsure of what to do with the band, Interscope sublicensed the project to Trauma Records in 1993. No Doubt released The Beacon Street Collection, consisting of outtakes from its previous recording sessions, that year on its own label, Beacon Street Records. Mixing 1980s punk rock and some grunge influences into the band's sound, the album contains a rawer sound than No Doubt, and it sold more than three times as many copies as its predecessor. Later that year, the label released Tragic Kingdom, much of which dealt with the relationship between Tony Kanal and Gwen Stefani.  The release of 1995's Tragic Kingdom and the single "Just a Girl" allowed the group to achieve mainstream commercial success. No Doubt began touring in support of the album late that year, and it grew into a 27-month international tour. In 1996, the second single, "Spiderwebs", was successful, and "Don't Speak", a ballad written by Gwen and Eric Stefani about Gwen and Kanal's break-up, was released as the third single and broke the previous record when it topped the Billboard Hot 100 Airplay for sixteen weeks. No Doubt was nominated for two Grammy Awards for Best New Artist and Best Rock Album at the 1997 Grammy Awards. By the end of the year, half of the songs on Tragic Kingdom had been released as singles, and the album was certified eight times platinum. Later, they were nominated for two more Grammys for Song of the Year and Best Pop Performance by a Duo or Group with Vocal, both for "Don't Speak". The Recording Industry Association of America certified the album diamond in February 1999, and with worldwide sales of sixteen million, it is one of the best-selling albums in history. The band's self-titled debut album began selling copies again off of the success of Tragic Kingdom and reached total sales of over a quarter of a million copies.  The album's release fueled a dispute between Trauma and Interscope Records over No Doubt's recording contract. Trauma sued for US$100 million for breach of contract, fraud, and extortion and sought to have its joint venture agreement ended, claiming that Interscope had reneged on its contract after the band had become more successful than expected. No Doubt had previously stated that it had switched to Trauma Records and that the transition was "really great...because now we have the attention and the focus of a small indie label." The case was settled out of court with a $3 million payment. Answer this question using a quote from the following article:

How did it do on the charts?
sold more than three times as many copies as its predecessor.