"Goin' In" is a song recorded by American entertainer Jennifer Lopez. The song features American rappers Flo Rida and Lil Jon, although the latter is uncredited for his part in the song. It was co-written by Joseph Angel, Tramar Dillard, David Quiñones, Sebastian Kole, Michael Warren and Jamahl "GoonRock" Listenbee, who also produced the song. It is featured on the soundtrack of the dance film Step Up: Revolution (2012) and on her first greatest hits album Dance Again... the Hits (2012). This is also the third song from the Step Up series to feature Flo Rida, after "Low" from Step Up 2: The Streets (2008) and "Club Can't Handle Me" from Step Up 3D (2010).

Lopez debuted "Goin' In" on the season final of American Idol May 23, 2012, as part of a medley with "Follow the Leader". Lopez wore an all-white outfit with a baseball cap and was backed on-stage by hip-hop dance crew ReQuest, who wore the same color scheme along with matching wigs.

On April 27, 2012, Digital Spy reported that Lopez had recorded two songs produced by GoonRock (who is well known for working with electrohop duo LMFAO on their international hit songs "Party Rock Anthem" and "Sexy and I Know It") and written by Ryan Tedder: "Clothes Off" and "Goin' In". On May 10, GoonRock posted a message on his Twitter account "Crazy day finishing 2012 's Song of the Summer for @jlo and @Official_flo #goinin." The song made its radio premiere on May 24, 2012 on Ryan Seacrest's radio show On Air with Ryan Seacrest. The song was made available for purchase on June 12, 2012.

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