is the debut album by Puerto Rican reggaeton singer-songwriter Yandel released physically on September 15,[1] 2003,[2] through Fresh Production, and released Worldwide on January 13, 2004, through Lideres Entertainment Group.

[4] Three songs from the album were released as singles with their respective music video; "Te Suelto el Pelo", "Ya Yo Me Cansé" and "Say Ho!

", they were included on the Bonus CD Edition from the album.

[5] Despite the songs "Mami Yo Quisiera Quedarme" featuring Alexis and "En la Disco Me Conoció" featuring Fido, weren't released officially as singles, both were featured at the end of the video of "Te Suelto el Pelo".

[6] A sequel to the album, Quien Contra Mí 2, was released on July 31, 2020.