Taciturno translates to "melancholy," "gloomy," or its English cognate, "taciturn." It's a beautiful, literary word used to describe someone or something that is sad, silent, and withdrawn.
In the song, Juanes sings of "el recuerdo taciturno de tu voz" (the melancholy memory of your voice). This poetic adjective perfectly captures the profound sadness and nostalgia of remembering a loved one who is far away, adding a deep layer of emotion to the lyrics.
Have you ever missed someone so much it felt like a physical ache? That's the heart of this classic rock duet from Colombian superstar Juanes and Nelly Furtado. The song is a conversation between two lovers who are separated by distance. He travels with her pictures, saying, "Llevo a un lado de mi piel / Tus fotografías" [I carry your photographs next to my skin], because when he's away, he feels like "tu ausencia me devora entero el corazón" [your absence eats my heart whole]. It's a feeling of having no other choice but to love someone from afar.
But there's a problem. Every time one of them reaches out, the other isn't there. They complain, "Cada vez que te busco, te vas / Y cada vez que te llamo, no estás" [Every time I look for you, you leave / And every time I call you, you're not there]. The sad conclusion they both come to is that the relationship only seems to exist in memories and pictures: "tú sólo en mis fotos estás" [you're only in my photos].