Extasía comes from the verb extasiar, meaning to fill someone with ecstasy or to enrapture them completely. It is a strong, poetic word that conveys overwhelming delight and wonder.
In the line "Revelación que me extasía" ("A revelation that thrills me"), Kali Uchis describes a realization so powerful it leaves her in a state of pure, almost dreamlike rapture.
Kali Uchis opens this one with a dare. "¿Y tú que pensaste? ¿Que yo me iba echar a morir?" [What'd you think? That I'd just curl up and die?] she asks, then answers herself: "La venganza es dulce, ¿sabes?" [Revenge is sweet, you know?]. It's a kiss-off delivered soft and slow, the kind of line that lands harder because she never raises her voice.
Then the song turns, and the bitterness gives way to something gentler: the moon itself falls in love. "Vive la luna enamorada" [The love-struck moon lives], she sings, watching it hang over the night the way a new feeling changes how everything else looks. Fascination, a little wonder at her own dreaming, and the sense that whatever this is now lives in the person in front of her, not the one she left behind.