The album has sold over 8 million copies worldwide. " Ain't It Funny" was released as the album's fourth and final single on June 20, 2001. It was the number one song in the United States at the time of the September 11 attacks for five non-consecutive weeks. The remix, which featured Ja Rule, shifted Lopez's musical style from pop to a more hip hop and urban-oriented sound. To further its success, record executives at Epic recruited Ja Rule of Murder Inc Records to create a remix of the song, "I'm Real (Murder Remix)". " I'm Real" was serviced to radio as the album's third on June 19, 2001. The album's second single, " Play", reached the top twenty in most countries, including the United Kingdom where it reached number three.
" Love Don't Cost a Thing" was released as the album's lead single on November 20, 2000, reaching number 3 on the US Billboard Hot 100 and number one on the UK Singles Chart. The album was certified quadruple platinum in the United States, making it her highest-selling to date, and became the sixth most successful album of the year worldwide. Commercially, J.Lo debuted atop the US Billboard 200 the same week as her film The Wedding Planner opened at number one at the domestic box office, making Lopez the first entertainer to have a number one album and film simultaneously. Upon its release, the album received generally mixed reviews from music critics, who criticized its manufactured sound, while praising its Spanish and dance material. J.Lo is a primarily dance-pop, Latin and R&B album which encompasses Latin pop, retro and contemporary pop. Drawing from her own experiences, Lopez included more personal songs on this album, which deals with themes of relationships, empowerment and sex. The album's title refers to the nickname given to her by fans, with Lopez describing it as an homage to her supporters. Lopez began recording the album in April 2000, enlisting producers such as Cory Rooney, Troy Oliver, Dan Shea and Sean Combs, all of whom she had worked with on her debut album On the 6 (1999). It was released on January 16, 2001, by Epic Records.
J.Lo is the second studio album by American singer Jennifer Lopez.