Coinciden comes from the verb coincidir, meaning "to coincide" or "to align." It's a sophisticated word that goes beyond simple agreement, suggesting a deeper harmony or synchronicity.
In "En Ésta No," the lyrics state, "No coinciden nuestros universos," meaning "Our universes don't align." This beautifully conveys the idea that despite their feelings, fate or circumstances prevent the lovers from being together in this lifetime, making it a poignant and memorable choice.
Sin Bandera built a career on love songs, and 'En Ésta No' is the rare one that admits defeat instead of dressing it up. The verses don't complain about heartbreak in the abstract; they list the small domestic future that isn't going to happen: no shared bed, no watching 'cuerdas de reloj' [clock hands] tick together, no sitting on the money left 'en el cajón' [in the drawer]. Repeating 'en esta no' [not in this one] after each list turns the refrain into a shrug more than a cry.
The song doesn't stay bitter. Every chorus trades that inventory for a wish: 'tal vez en otra vida' [maybe in another life], sung four separate times, each one naming something that could go right somewhere else, the same skin, the same voice. It's a breakup song that keeps one door cracked open. Just not in this one.