"Play" is a song recorded by American singer Jennifer Lopez for her second studio album, J.Lo (2001). It was released on March 27, 2001, as the album's second single. The song was written by Cory Rooney, Christina Milian, Arnthor Birgisson, and Anders Bagge, with production done by the latter two under their production name, Bag & Arnthor. A dance-pop track, it was noted for its funky vibe, compared to the works of Madonna by critics. Over an electric guitar and a funky beat, Lopez sings about pleading a DJ to play her favorite song.

"Play" was a commercial success, peaking at number 18 on the US Billboard Hot 100 while charting within the top ten in over ten countries. Most notably, it reached number three in the United Kingdom. Its futuristic-themed music video was directed by Francis Lawrence. Additionally, "Play" was performed live by Lopez on numerous occasions, including at her Let's Get Loud concerts.

After a high-profile title role in the musical biopic Selena (1997), Lopez began developing her own career in music, later being signed to Work Records by Tommy Mottola. Her debut album On the 6 (1999) became an instant commercial success, and spawned the Billboard Hot 100 number one song "If You Had My Love". This led her to begin recording new material for her second album in April 2000. Initially, the album was to be called A Passionate Journey. During this period, Lopez began to transition into a sex symbol and was nicknamed J.Lo by the public, which is known as a nickname and "public persona". Hence, she instead released an album entitled J.Lo, which she credits as being more "personal" and "romantic" than On the 6. "Love Don't Cost a Thing", the album's lead single, was globally premiered on November 16, 2000.

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