Muñeca literally translates to "doll". While it can refer to a toy, in many Spanish-speaking cultures, it's also a common term of endearment for a beautiful woman, similar to calling someone "doll face" or "baby doll" in English.
In "Sirena Del Amor," the lyrics repeatedly ask, "Quien te hizo muñeca tan linda tan bella?" (Who made you such a pretty, such a beautiful doll?). This highlights the affectionate and admiring way the word is used to describe the beloved, making it an interesting and culturally rich word to learn.
Agua Marina's "Sirena del Amor" is a sweet, romantic tune where the singer is absolutely smitten! He sees his beloved as a beautiful doll, a unique and sweet gift, even calling her a "muñeca tan linda tan bella" [such a pretty, beautiful doll]. He feels she's the charm of the sea that kisses her, a precious being.
The lyrics invite us into a world where love is a natural force, transforming everything it touches. He sings about how she's so lovely when love invades, and her singing heals wounds. The song is a declaration of devotion, with the singer stating that she is more than just a doll to him; she's everything, and he will follow her wherever she goes because he loves her so much.