In May 1999, the A*Teens broke sales records in Sweden with their first single "Mamma Mia," which entered the Swedish charts at #1. After three weeks, it had sold 120,000 copies, becoming the best-selling single in Sweden that year, and remaining #1 for two straight months. Their debut album "The ABBA Generation" shipped in August 1999, also entering the charts at #1. It perched there for five weeks, and went on to triple-platinum sales in Sweden, and more than 3 million copies sold worldwide.
After conquering Scandinavia, the band took on the rest of Europe and the world. In 2000, they earned a European Platinum Award for 1 million sales on the continent. That September they received a Viva Music Award for Best International Newcomer, competing with the likes of Christina Aguilera and blink-182. Much of 2000 was spent touring the U.S.A. with 'N Sync and Britney Spears. By September, their hard work in the States started paying off as "The Abba Generation" passed Gold status on the way to Platinum.
The group followed this with their second album, the Gold-certified "Teen Spirit." Worldwide touring in the wake of its release brought new levels of success for the A*Teens. One highlight came as the band arrived in Thailand as part of their 2001 tour, finding their pictures on cans of Coca-Cola. Remembers Sara, "We were the first international artists ever to appear on a soda can there.