"Let's Get Loud" is a song by American singer Jennifer Lopez for her debut studio album, On the 6 (1999). Originally written by the song's co-writer Gloria Estefan for herself, she felt as if the song was too similar to her previous material and passed it onto Lopez. Estefan, who co-wrote the song alongside Kike Santander, stated that Lopez would have "more fun with it" and would put "a new spin" on it. "Let's Get Loud" is regarded as Lopez's signature song. Estefan eventually released her own version of the song in 2011 as a bonus track on the deluxe Target edition of her album Miss Little Havana.

Jennifer Lynn Affleck, also known by her nickname J.Lo, is an American singer, actress, and dancer. Often dubbed the "Queen of Dance", Lopez is regarded as one of the most influential entertainers of her time, credited with breaking barriers for Latino Americans in Hollywood and helping propel the Latin pop movement in music. She is also noted for her impact on popular culture through fashion, branding, and shifting mainstream beauty standards.