 Lopez's debut single, "If You Had My Love", was released in May 1999. The song reached the top spot on the Billboard Hot 100 on the issue dated June 12, 1999, dethroning Ricky Martin's "Livin 'La Vida Loca" as the number-one song in the country. The song stayed atop the Billboard Hot 100 for a period of a month and remained in the top ten until September 1999. "If You Had My Love" was also a success internationally; topping the charts in countries including New Zealand, Australia, and Canada. The song also peaked at number four on the UK Singles Chart and reached the top ten of seven other countries. "No Me Ames", a duet with American recording artist Marc Anthony was released as a B-side to "If You Had My Love" and as the album's second single. The song was promoted by Sony Discos, who released a salsa and a ballad version of the song on their respective radio formats. The success of "If You Had My Love" and On the 6 came as a surprise to critics; their release made the "popular actor even more popular". Both the music industry and the public became intrigued by "this woman who seemed to have so many different talents". Following the release of "If You Had My Love" and "No Me Ames", three additional singles were released from the album. By the end of 1999, Lopez had successfully converted herself from a film star to a pop star.
