is a song by Puerto Rican reggaetón recording artist Ivy Queen, from her sixth studio album, Sentimiento (2007).

It was composed by Queen, produced by Rafi Mercenario, and released as the second single from the album in February 2007.

Ivy Queen along with Ken-Y also performed the remix to the song as a part of the setlist of her 2008 World Tour which was held from the José Miguel Agrelot Coliseum, known as the Coliseum of Puerto Rico in San Juan, Puerto Rico as well on R.K.M & Ken-Y's Romantico 360° Tour in 2009.

[2] On the album, as a part of her evolution in reggaetón, she includes "solo turns", instead of duets by guest artist.

[3] Of the solo tracks on the album is "Pobre Corazón" by Divino while others include "Manaña Al Despertar" by Baby Rasta and Noriega where the artist performed songs without vocals by Ivy Queen.

[4] The song was recorded at Marroneo Studios in Bayamón, Puerto Rico along with the third single "Sentimientos" and "Indecisiones" from the album.

[8] "En Que Fallamos" was released in February 2007 as the second single from the album by Univision Records behind "Que Lloren" and before "Sentimientos".

Direction and production was handled by Ron Jaramillo, who said the music video would not only show the big parts of Mexico City but also "the under looked areas without neglecting hot and sensual scenes", explaining that "after all, it's talking about a relationship".