Aaaa, I wanted these to be done a lot sooner, but at long last it's finally here:
Official VGMC'21 Review~!
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I like how you approached the prompt unlike many of the others: exactly as I was originally envisioning. I don't think this is sign of lack of creativity however, as your actual piece was very unique (in a good way!). And you get extra points in my heart for giving your song lots of lore ♡.
Since you have both your pieces here, I've included both reviews ^-^
For your first piece you start by creating a very full, yet minimal atmosphere, then transition to more urgency and danger. I really like the passage from 0:58 to ~1:05, however I don't really like the sound design that the bass pulses transition into afterwards. It feels like you cut all the interesting high-mid frequency details, leaving just the flat bass. There are all sorts of different techniques you could use in this situation to describe an alien environment, such as playing with stereo separation & panning, or layering some other instruments over / under the bass. When you're not really sure what sounds you want, it's a good idea to compare against other existing songs. Given the concept you chose, I would recommend listening to the Made in Abyss OST by Kevin Penkin, as it has very similar vibes. I think there is a lot you could learn by studying what you personally think does or doesn't work in it.
I don't think I mentioned it enough, but there are a lot of small details that I really enjoy, such as the clicks at 1:17 that speed up & slow down. In addition, your details which are pivotal to the atmosphere (such as at 0:35) take too long to enter. I would've liked to hear some of those beautiful details as early as 0:11.
You present a very cool idea with 1:37 by combining static noise, dissonant chords, and that rough but loud "cave sound" around 1:39, that I wish you developed further, or at least spent more time building up to. As it stands, your piece's intensity peaks nearly without warning around 1:37, then loses steam in the rest of the section. Even the section around 2:20 feels like its impact isn't as strong as it could've been.
Finally, your mix could use some small touch-ups as well. For example, the piano in the first & last section is much too quiet.
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First off, I like how your second piece is thematically connected to your first. They definitely feel like they're depicting the same world, as they are both comprised of a similar arrangement. I also like how the initial melody from your first piece, which appears to represent the mysterious / uncertain aspect of the environment comes back later in the second piece.
The mixing of your second piece is also very similar to your first, in that the piano is much too quiet and you have a bit of clashing at moments, such as at 3:31. In addition, I think a bit of sidechain on the kick to give it some more space amid the low frequency airy texture would give the track more punch. Also, the subtle bass sound starting at 3:20 feels like it comes out of nowhere, as if it isn't connected to the rest of the piece. If you could change the rest of the instruments to acknowledge the effect that the bass has on the piece, it would make it feel more at home.
But listening again, wow, what is that percussion? I don't think I've heard this kind of percussion accented in such a way, yet the sound design feels really good and fits the atmosphere perfectly. It could probably be a bit crunchier as it's missing some high frequency details, but just a little bit.
I also really like the atmosphere, though it is a bit muted. I mentioned this briefly before, but I think if you added some more high frequency details it would bring the track to life! Your use of static as both percussion, melody, and atmosphere confounds me. I don't know why it sounds so good, but it does. I suspect it has something to do with adding a second layer to the percussion? However, it is missing something little. I think a more melodic & crunchy static would fit the piece better.
Finally, I think your melody that starts at 3:22 could use some more space or syncopation, as it feels a bit directionless as it runs on. For example, modifying it to complement the drums would emphasize the direction the song is moving in.
In general, both tracks were good enough to be thrown right into a game, yet still have the potential to be so much more! I rate both of these tracks 1 unfriendly creature who just wants some piece and quiet.
ps: feel free to reach out to me if you have any questions (discord or ng) & we can chat more about your song!