"Mi Corazoncito" (English: "My little heart") is Aventura's second single from their second live album K.O.B. Live. The song reached big recognition in many Spanish-speaking countries and reached number two on the Billboard Hot Latin Tracks chart.

The music video for "Mi Corazoncito" shows Romeo looking at a picture of a girl he is in love with and he is imagining that she is in love with him, while in reality, she keeps pushing him away.

"Mi Corazoncito" received two awards in the 2008 Latin Billboard Music Awards for "Hot Latin Song of the Year" and "Tropical Airplay Song of the Year" by a Duo or Group. The song also received an award at the Premio Lo Nuestro 2008 for "Tropical Song of the Year".

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