The song was released on October 6, 2017, by Atlantic Records to support relief efforts in Puerto Rico in response to Hurricane Maria, which struck the island in September 2017.

[8] The song is composed of a compilation of names of all 78 municipalities of Puerto Rico, including prominent areas such as Old San Juan, sung by numerous artists such as Jennifer Lopez, Camila Cabello, Gloria Estefan, Fat Joe, and Marc Anthony.

[5] Other artists on the song include Rubén Blades, Pedro Capó, Dessa, Luis Fonsi, Juan Luis Guerra, Alex Lacamoire, John Leguizamo, Lin-Manuel Miranda, Rita Moreno, Ednita Nazario, Joell Ortiz, Anthony Ramos, Gina Rodriguez, Gilberto Santa Rosa, PJ Sin Suela, Ana Villafañe and Tommy Torres.

The sound of the Puerto Rican coquí frog can be heard at the beginning and the end of the song.

Proceeds from the song are donated in full to the Hispanic Federation's UNIDOS Disaster Relief and Recovery Program, destined for the victims and survivors of the hurricane on the Isle of Puerto Rico.