Calambre literally means "cramp" or "spasm," often associated with a sudden, involuntary muscle contraction. However, it can also refer to an electric shock or a sudden jolt.
In this song, the artist uses it metaphorically in the line "Fuiste el más bellísimo calambre," which translates to "You were the most beautiful jolt/shock." This suggests a powerful, intense, and perhaps even painful experience that was nonetheless beautiful and impactful, like a sudden, unforgettable sensation that shakes you to your core.
In "RINCÓN," which means "corner" in Spanish, MILO J explores a world where "los colores se hacen grises" (the colors turn gray). The song paints a picture of someone who feels trapped, stating there is "no hay rincón al que escapar" (no corner to escape to). Amidst this feeling, the singer finds a strange sense of peace in being alone, admitting that "mi confort es la soledad" (my comfort is solitude).
This feeling of loneliness seems connected to a past relationship. The singer struggles to accept that someone is no longer in his life, describing them as the "más bellísimo calambre" (most beautiful cramp)—a powerful metaphor for something that was both wonderful and painful. He knew he had to let this person go, like a bird flying off to find "otros aire'" (other airs), but the process has left him feeling empty and questioning how long he can keep going.