Quimera translates to "chimera" or "illusion." It's a fascinating word derived from Greek mythology, referring to a mythical beast composed of parts of different animals, or more broadly, an impossible or fanciful hope or dream.
In the song, iLe sings, "Como si fueras una quimera" (As if you were a chimera). This line beautifully evokes the elusive, almost dreamlike quality of the person she's singing about, suggesting they are both captivating and perhaps unattainable or unreal. It's a poetic and less common word that adds a layer of mystique to the lyrics.
iLe's "De Luna" tracks a relationship through the moon's phases instead of a calendar. The refrain "De luna a luna" [From moon to moon] returns like a cycle each time the story flips: first "Me hiciste tuya" [You made me yours], then just as certainly "Me abandonaste" [You abandoned me]. In between, the song turns physical instead of sentimental, describing hips, veins and bone as if love and its ending were the same body.
By the end, the moon becomes an eclipse: "Cual sol a luna" [Like sun to moon], "Y fue un eclipse" [And it was an eclipse], "Tan hechicero" [So bewitching]. iLe doesn't chase the ex who's moved on. She watches him "Qué lindo verte" [How nice to see you], "Acompañado" [Accompanied], "De algo mío" [By something of mine], "Que te he dejado" [That I've left you with], letting what she left behind do the talking instead of her.