Welcome to the forum, I've checked the single are here are some of my thoughts:
"Transgresión" has a good dose of pop-oriented sensitivity, reminiscent of Purity Ring, but with rougher edges. The intro to the song is amazing, and made me believe at the beginning that it'll be a huge hit, but then it goes in a weird direction at 0:45. Both vocals and the melody drift towards more sad and off-beat vibe. I think approaching it from differnet angle, present in those first 40 seconds (more upbeat I guess?) would be much better. "Las Entrañas" has a nice ominous atmosphere, that smoothly evolves into a dreamy, pulsating beat. I think I'd prefer this track to be a bit shorter and without the vocals. But overall cool little single. Looking forward where you'll take this project next