…Baby One More Time is the debut studio album by American singer Britney Spears. It was released on January 12, 1999, by Jive Records. Spears had been a child performer on The All-New Mickey Mouse Club from 1993 to 1994, and was looking to expand her career as a teen singer. After being turned away by several record companies, Spears signed with Jive for a multi-album deal in 1997. She traveled to Sweden to collaborate with producers Max Martin and Rami Yacoub, who had been writing songs with producer Denniz Pop and others, for …Baby One More Time. Their collaboration created a pop, bubblegum pop, dance-pop, and teen pop record, with Spears later saying that she felt excited when she heard it and knew it was going to be a hit record. The album was completed in June 1998.

Upon its release, …Baby One More Time garnered mixed reviews from music critics, with many praising its commercial appeal but deeming it silly and premature. Despite its initial mixed reception, it helped Spears receive a nomination for Best New Artist at the 42nd Annual Grammy Awards (2000). Retrospectively, it has been hailed for its major impact on pop culture, citing it as one of the most influential pop records of all time. A massive global commercial success, it made Spears the fifth artist under the age of 18 to top the US Billboard 200. It has been certified 14× platinum (diamond) by the Recording Industry Association of America (RIAA). Spears’ best-selling album, it has sold over 25 million copies worldwide, making it one of the best-selling albums of all time, as well as the best-selling debut album by a female artist.

…Baby One More Time produced five singles. The lead single, “…Baby One More Time“, brought Spears tremendous global success, reaching number one in most countries it charted in and becoming one of the best-selling physical singles of all time. In 2020, it was named the greatest debut single of all time by Rolling Stone. Subsequent singles “Sometimes” and “Born to Make You Happy” peaked within the top ten in most international countries while “(You Drive Me) Crazy” became Spears’ second US Billboard Hot 100 top-ten hit. Spears heavily promoted the album through interviews and televised performances. Furthermore, she embarked on her first headlining concert tour, entitled …Baby One More Time Tour (1999) and later continued with (You Drive Me) Crazy Tour (2000).