Wow, those percussions (including the effects) transport you to another dimension. Everything is so dreamy and relaxing. The second track enhances this sensation even more with the addition of typical orchestral instruments mixed with excellent use of sound design: background details, ethereal pads, perfectly executed arpeggios (including a very balanced and clean mix free of annoying resonances). The theme of the abyss, in some ways, reminds me of a game in the style of ABZU: calm and exploratory, with similar background music, it would be perfect (I might have improved the ending with a harmonic closure rather than just fading out). Perhaps you could have added a track that set a different mood within the storyline; I would have been curious to see how you would have tied the originality of the OST to a less static scene. Nonetheless, beyond that, it's truly a great piece of work that deserves praise! Well done.