En cantos is a beautiful play on words that can mean both "in pieces" and "in songs." This duality makes it incredibly interesting and unique.
In the song, iLe sings, "Ay yo que estaba entera y ahora estoy volando en cantos por ti" (Oh, I who was whole, and now I'm flying in pieces/songs for you). This line perfectly captures the feeling of being so overwhelmed by love that you're both broken into pieces and soaring with emotion, as if your very being has become a song.
Have you ever been so completely smitten that you feel like you're literally flying to pieces? That's exactly what iLe and Natalia Lafourcade sing about in "En Cantos"! This song is all about that intense, all-consuming feeling of falling for someone who just takes your breath away. The lyrics describe feeling the person even when they're not around, thinking of them while sleeping, and dreaming of them while awake.
It's a beautiful picture of how someone's presence can light you up inside, with lines like "Todas tus luces me brillan, y me alumbran por dentro" [All your lights shine on me, and illuminate me from within]. But it's also a little dangerous, as their eyes can "acuchillan el alma" [stab the soul]. The singers admit, "Ay yo que estaba entera y ahora estoy volando en cantos por ti" [Oh, I who was whole, and now I'm flying in pieces for you], perfectly capturing that feeling of being completely undone by love. They even want to make the person their "mesita de noche" [nightstand], which is a pretty funny and sweet way to say they want them close all the time!