Usurpadora is the feminine form of "usurper," someone who wrongfully seizes another's place or power. It's a powerful, dramatic word you won't hear in everyday conversation, making it very memorable.
In this bachata hit, Romeo Santos feels his lover has been replaced by an imposter. He sings, "le pongo fin a la impostora, usurpadora" (I'm putting an end to the impostor, the usurper), accusing this new version of his partner of illegally stealing the place of the woman he truly loves. This theatrical word perfectly captures the song's high-stakes emotion.
Have you ever felt like your partner has changed so much they seem like a completely different person? Romeo Santos takes that feeling to a whole new level in this bachata track. He's convinced his lover has been replaced by a stranger, asking, "¿Quién es esta extraña que se ha apoderado de tu ser?" (Who is this stranger who has taken over your being?). He misses the passionate woman he knew, the one who gave him goosebumps, and feels the new version is just a "mala imitadora" (bad imitator).
Instead of just arguing, Romeo decides to conduct a full-on investigation. He declares, "Exijo contigo una entrevista" (I demand an interview with you), and starts grilling her with questions only the 'real' woman would know. He asks for the location of their first kiss in the rain, the hotel room number where they first made love, and even her favorite spot on her body. It's a dramatic and slightly over-the-top way to say the spark is gone, demanding, "Si en verdad eres la original, demuéstramelo ahora" (If you're really the original, prove it to me now).