Pulmón literally means "lung." While it's a common anatomical term, its use in this song is deeply metaphorical and powerful.
Bomba Estéreo refers to "El pulmón de la tierra" (The lung of the earth), using it to represent the vital natural environments, like the Amazon rainforest, that are essential for the planet's health. This evocative imagery makes the word stand out and highlights the song's environmental message.
"Tierra" ("Earth") is Bomba Estéreo's tribute to the natural world, and a protest against what has been done to it. The verses list what has been taken away one by one: the sea, the sky, the wind, the forests, the rivers, even the gold pulled from the mines. It reads like a quiet indictment of greed and environmental damage.
But the song does not stay in mourning. Its chorus insists that the land "is not for sale or purchase" and belongs to everyone to share. Even after everything described as lost, the earth still "wakes up" and reaches back out, inviting people to dance rather than give in to despair.
That is the heart of the song: dancing as a form of resistance and joy alongside grief, and a reminder that the earth keeps offering itself back to the people who live on it.