Pasajero is a fascinating word with a double meaning. It can mean 'fleeting' or 'temporary', but it also literally translates to 'passenger'.
In the song, Aitana sings about "un amor que siempre será pasajero" (a love that will always be fleeting). This beautifully captures the bittersweet feeling of a love that you know won't last, as if it's just a passenger passing through your life. It's a poetic way to describe a temporary romance.
Have you ever tried staying awake just so tomorrow wouldn't arrive? That is the exact panic Spain's Aitana and Colombian duo Cali Y El Dandee hit you with in "+" (pronounced Más). Right from the start, Aitana refuses to sleep—"Hoy no me voy a dormir / Para que al reloj no le pasen las horas" [I am not going to sleep today / So that the hours don't pass on the clock]—hoping that freezing time will stop an inevitable goodbye. The track turns heartbreak into a messy math problem. The singers keep calculating what went wrong: "Más te amo, menos tiempo" [The more I love you, the less time there is], subtracting brown eyes, and ending up with nothing after giving everything ("Entregarlo todo y quedarme con cero" [Giving it all and ending up with zero]). It is dramatic, fast-paced, and painfully relatable when an impending breakup feels like a countdown.
The real kicker here is the emotional clash in the lyrics. While they put on a brave face on the outside ("Sonrisas por fuera aunque por dentro lloras" [Smiles on the outside even though you cry inside]), they are secretly wearing out every word in the dictionary writing sad tracks: "ya me he acabado el abecedario / Por llorar canciones que te escribo a diario" [I have already run out of the alphabet / From crying songs that I write for you daily]. February takes the blame too ("por tu culpa febrero me duele de más" [because of you, February hurts me too much]), pinpointing an exact month where the memories sting hardest. In Spanish, saying you miss someone "de más" means doing it to an excessive, overflowing degree. The title "+" suddenly makes total sense: they didn't just love, they loved too much, which makes walking away nearly impossible.