I like the majestic arpeggios at the beginning and the rich atmosphere. The beats at :25 are also cool - nice and crisp drums really create a nice sense of drive despite the flowy, trance-like atmosphere. Personally, the bass at :53 didn’t work quite as well for me. It sounds a bit too heavy given the character of the rest of the piece, and also dominated the mix too much. I’d suggest scaling back the reverb a bit on it and maybe filtering out some of the bass’s higher-pitched frequencies with an equalizer or something.

In fact, once the texture gets busier at 1:50 or so, the reverb and lack of balance in the frequencies is really distorting the mix. I can tell because the drums sound way fainter here, and I’m guessing it’s not because you lowered the volume. An important step towards fixing that is cutting back on the reverb, but the main thing you need to do is use more filtering. You shouldn’t really have any frequencies beneath 100 Hertz or so in the melody synths, or anything besides the bass and kick drum, really. Ideally, you’d select your instruments before composing a piece, keeping “slots” in mind - assigning one or two instrument each to the bass range, mid-low, middle, high-mid, and treble range. That way, even if the 2 instruments belonging to the same frequency range are playing at once, you can keep them sounding distinct in the mix using tools like panning, sidechaining, and stereo widening. In reality, most producers don’t usually do this “slot” technique, but while you’re learning how to mix and master your tracks it can be really helpful.

Anyway, back to your piece: sometimes, the rhythm is a bit square (a lot of straight eighth and quarter notes in the harmonies of individual instruments, notably at 4:55). This wouldn’t be a huge problem if it was just the harmonies or arpeggios that did this, but it also occurs in the melodies, which makes them significantly less memorable or interesting.

That said, the progression is enjoyable here. Very dream-like and evocative. The flow of the piece is really smooth overall, but it’s also hard to make the one-climax model work well over the course of 6 minutes. I’d suggest aiming for a little more ebb and flow over the course of the piece - if, after listening to your piece once, I can pretty easily draw a line on my notepad that represents the “energy level” of the piece over time, especially a really long one like this, it could probably use a more interesting arrangement. Also, the piece lacks a strong sense of “arrival” at any one point, which is probably related to the somewhat linear structure.

I’ve been really tough on you in this review, but I want to emphasize that the main criticisms I have boil down to a couple of core issues: mixing and structuring/arrangement. In fact, mixing is probably the main one for me. I can tell you have a good sense of harmony and progression. The square rhythm is a relatively small problem, and you’ve done a lot of other things to keep the piece interesting besides the arrangement (sound design, atmosphere, etc.). Keep at it, DiamondEnderman! And let me know if I can help point you in the right direction on filtering/mixing techniques. ^_^

Mixing, mastering, and balance
.75/2
Structure, transitions, phrasing, and variety
1/1.5
Melody, tonality, harmony, and texture
1.5/2
Instrumentation and sound design
.75/1
Emotion, atmosphere, and catchiness
1.5/1.5
Originality and uniqueness
.75/1
Overall (how do the elements above interact?)
1/1
Composite score
7.25/10

Nice.. :)