Unforgettable is a four piece set celebrating the life of the late Tejano single Selena. The set consisted of two albums, which were released on the same day as separate discs: Unforgettable: The Live Album and Unforgettable: The Studio Album.
A week later, on April 5, 2005, Unforgettable: Limited Edition was released, which combined the studio and live album with two DVDs.
Unforgettable - The Live Album is a collection of Selena's greatest hits performed in concert and compiled for previously released live albums. It was released on March 29, 2005. The album peaked at number 26 on the Latin Album Chart. The album was released in promotion for the tribute concert Selena ¡VIVE!. Many fans were disappointed when "No Debes Jugar" and "La Llamada" were not released live.
Unforgettable - The Studio Album is a collection of Selena's greatest hits. It was released on March 29, 2005. The album peaked at number 17 on the Latin Album Chart and was certified Gold. The album was released in promotion for the tribute concert Selena ¡VIVE! and simultaneously with Unforgettable: The Live Album.