“El Último Adiós” is a song written by the Peruvian Grammy-winner singer Gian Marco and Emílio Estefan Jr. in memory of the 9/11 attacks. Over 60 different artists joined to sing the lyrics to help raise money for charities and help the families of the victims. The song was released in a special CD and it was sold worldwide. In the four minutes of the song, you can hear many musical genres. The international stars that collaborated with GianMarco included Ricky Martin, Shakira, Christina Aguilera, Thalía, Chayanne, Alejandro Sanz, Ivete Sangalo, Marc Anthony, Juan Luis Guerra and Gloria Estefan.