[3] 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.

So doing the movie just reminded me of how much I missed singing, dancing, and the like..." After filming Selena, Lopez was "really feeling [her] Latin roots" and cut a demo in Spanish.

During production of the On the 6, Lopez was aware of the fact that she received her recording contract on the premise of her looks and having an already established name in the entertainment industry, and wanted to prove that she had musical talent.

[10] Mario Tarradell from The Dallas Morning News complimented the Latin flavor in the song, writing "Jennifer Lopez wastes no time asserting her Latina heritage: "Let's Get Loud," a cut from the actress—turned—singer's debut album, On the 6, opens with a sassy declaration – '¡Ya Jenny llego, presente!

"[12] Michael Paoletta from Billboard, commented that the song's remixes "deliver the goods in a variety of ways", further explaining that the Kung Pow "ups the ante" with the Castle Hills Club mix, considering that it "overflows with diva attitude and Latin/pop sensibilities.

"[13] Richard Torres from Newsday gave a negative review of the song, stating that it was a "total misfire" and that "Lopez simply doesn't supply enough oomph to drive this salsa-injected tune.

[22] The song's music video was directed by Jeffrey Doe and filmed live at the 1999 FIFA Women's World Cup at the Rose Bowl in Pasadena, California.

Autistic young students at a Staten Island, New York, school listened to "Let's Get Loud" every day, learning the dance moves and lyrics.

[26][27] Lopez performed "Let's Get Loud" on the series finale of American Idol on April 7, 2016, alongside her single "Ain't Your Mama".

[28] On February 2, 2020, the song was performed by Lopez with her child, Emme Muñiz, as well as Shakira, during the Super Bowl LIV halftime show.