Echeverri sings that, "The waters of the river come running, singing / They go through the city dreaming to be clean, to be clear." This theme is carried throughout the album. In the song "Aguita" ("Water"), Echeverri sings that "the water belongs to everyone / Not to the highest bidder." In August, the band promoted awareness of the issue by traveling down the Bogotá River gathering signatures for the referendum. By September 15, over two million signatures had been collected, propelling the referendum to its next phase of the lengthy process.