The sound is different, more personal. It's not the same as before. There are moments when it sounds closer to what she did in the 90s, but there are also things that hadn't been done before. The song No quieren más mi rocanrol is an example: it's more direct, clearer, as if she had removed a layer.
In Autoestima, she questions whether one deserves what they want, and in Siglos, time and how we spend it are discussed. Some songs are slower, others faster. What matters is that everything sounds authentic. Nothing is hidden, nor is there a search for being the best. Only what is felt is put forward.