I love it. I absolutely love it. I am consistently amazed at the quality of your music, and this Adagio is no exception. The way you put this piece together is really something special, the balance between proportion, emotion, and musical inventiveness is just perfect. I've listened to this piece about 5 times now, and I'll listen to it 100 times more! Count yourself as one of the top composers on this site!
In general, my favorite part was the first B theme section. I'm in love with it all: the melody, the textures, and harmonies were just gloriously used, especially at bars 52-55. It was an eargasm I was experiencing, as they say lol. I absolutely love the arpeggios in the piano and harp, such an underrated texture, that I'm shocked hasn't been historically used more often. I don't really have a least favorite part in this piece.
Oh, and I also liked the solo string lines in the recap of the A theme, that is quite a beautiful moment.
If there's anything I would add, I might put in bars 69-70 a large arpeggio in the piano and harp, a bigger one than the previous arpeggios , as a sort of "grand close" for that section, because I think that would make the closure of the B theme even more satisfying, at least it would for me personally.
I thought it worked well, especially as a slow movement for a symphony, like you were suggesting. In particular, I can imagine the opening introduction work as a sort of reference to a theme or motif that could (hypothetically) be used extensively in the first movement. And of course, the overall form worked well proportionately speaking. Nothing felt out of place at all.
It was quite beautiful, to my ears. It's a very creative way to harmonize melodic lines, and you utilized it beautifully in the ending of the piece. I'm trying to utilize it a bit in my own music, it's a useful tool, great for emotional mystery. So yes, I would say it's quite effective, and especially against the clarinet 😄
I liked how you used those instruments. The saxophone used as a melody was special, like how when an English horn is used in a symphony for a lyrical line -type special. I think those are great instruments to use in an orchestra. I always think of the first movement of Rachmaninov's Symphonic Dances when thinking about saxophones in an orchestra.
As a bonus, and I know you weren't asking for commentary on this, but I also liked how you used the celesta. It was a very unique and exotic sound it produced when used in this manner. It was beautiful and mysterious.
I thought it worked out well. I could easily imagine a real orchestra performing this as I was listening to your MIDI rendition, you do a great job of balancing the volume levels of the melodic lines and harmonic ones!
This reminded me a lot of Ottorino Respighi, as I thought a lot of the brass textures (as well the use of the contrabassoon), were quite similar to how he orchestrated his "Pines of Rome" and the "Church Windows", particularly the last movements of both. Even the melodic shape of the A theme has as a similar solemnity to those Respighi movements. I'm also reminded of the "Winter Daydreams" Symphony by Tchaikovsky, in the introduction like @PeterthePapercomPoser said, but also in the B theme, particularly the use of the cellos having the melodic line, which Tchaikovsky uses in the 2nd movement; that's actually one of my favorite pieces of all time.
I'm also reminded of "national school" Russian composers like Lyadov and Ippolitov-Ivanov, who both have some very atmospheric works for orchestra, like the "Melancholy Song" of Lyadov's 8 Russian Folksongs and the "In the Village" movement of Ippolitov-Ivanov's "Caucasian Sketches" suite no. 1. Also, the trills remind me of this Myaskovsky symphony movement:
But don't let my many comparisons detract from the fact that your creative originality is present all throughout this Adagio. Your style is very beautiful and recognizable, and I love it!
Also, if @Thatguy v2.0 is the #1 gmm fanboy, then please count me as the #2!