U.S. promotional tour, and on the verge of the release of their album in the United States, the band was invited to tour with Britney Spears that summer in her U.S. Tour. They also made several appearances on Disney and Nickelodeon to promote their music. The band's debut became a hit in North America, where the album reached seventy-one on the Billboard 200 Albums Chart being certified Gold in September 2000, but its sales reached the million mark in 2001. That month, the A-Teens won a Viva Music Award for Best International Newcomer, competing with the likes of Christina Aguilera and Blink-182, and also the band announced what would be the lead single from their second album and their first to be an original song, "Upside Down", which would also become their signature song. The song was released to Swedish radios on 23 October 2000, and was later unleashed worldwide. When the single was commercially released, it reached number two in Sweden and was later certified 2× Platinum. The song became the band's biggest hit when it reached the top ten in several countries and when the single was released in the United States. The physical single reached number six on the Billboard Hot 100 Single Sales Chart, selling over 500,000 copies in three weeks and being certified Gold. In January 2001, the band was nominated for "Best Swedish Group" at the NRJ Awards. 2001–2002: Teen Spirit The band's second album, entitled "Teen Spirit", featured a compilation of tracks that were not ABBA covers and when it was finally released on 26 February 2001, it debuted at number two in the Swedish Charts. This pop sensation hit reached the top ten in other countries and entered at number eighty-three on the World Charts, number thirteen on the European Albums Chart, number fourteen on CNN's WorldBeat Album Charts and peaked at number fifty in the United States selling over 60,000 copies in its first two weeks, ensuring Gold Status for sales exceeding the 500,000 copies in the United States alone. Prior to the release of the album, the A-Teens became one of the first bands to broadcast one of their shows on MSN's Websites. The UK releases were delayed due to A-Teens' failure with their previous album in that country. When "Upside Down" was released there in May 2001, it became their biggest hit in the country. The single peaked at