Esclava literally translates to 'slave,' but in this context, it refers to a specific type of jewelry. In many Spanish-speaking countries, an esclava is a popular chain bracelet, often with a small plate for engraving a name.
ROSALÍA plays with this double meaning when she sings, "Llevaba tu esclava para pensarte" (I wore your bracelet to think of you). She suggests that this piece of jewelry, once a symbol of being 'enslaved' by her love, is now just part of a past she has moved on from.
ROSALÍA kicks off this song with a super specific memory of how a relationship started. She was 'Vestida con F de Fendi' [Dressed in Fendi] and 'Bailando Plan B, la de Candy' [Dancing to "Candy" by Plan B] when this person fell for her. It's a cool, confident look back at the beginning of something that's now over.
But don't let the sweet melody fool you. The rest of the song is about moving on. She says, 'Ya no te quiero como antes' [I don't love you like I used to] and admits that while the breakup hurt, 'Me rompiste, pero solo en parte' [You broke me, but only in part]. She's turned getting over him into a skill, claiming 'de olvidarte yo ya hice un arte' [I've made an art of forgetting you]. The whole time, she insists that he is the one who can't move on, repeating 'No me has olvidao'' [You haven't forgotten me] like a taunt.