Thanks for posting @Sebastian Guzman ! It's been a while since I've listened to the Liszt B minor Sonata, but I am definitely getting vibes of it here (most assuredly from your B-octave motif). Your musical language in this work does feel very Lisztian to me, which is inclusive of the harmony and the piano textures, and that I mostly do mean as a compliment. I'm curious to know what other influences/inspirations you may have had while writing this movement though, as some sections do seem to draw from other wells of musical ideas (e.g. the harmonic movements in b. 91-105 felt distinctly modern to me). I confess that I am not really in a position to offer super helpful advice but I hope you'll find this useful anyway. I also don't mean any suggestion as an attack on your writing, of course, but as an exchange of ideas that you could optionally disregard :) Exposition The B-octave motif is very reminiscent of one of the motifs in the B minor Sonata, haha. I see that the majority of the dotted rhythm in this motif is the backbone for the rhythm of the A theme, if I am correct... I noticed in your trimmed-down video you seemed to have cut out b. 54-62 from the A theme and b. 105-118 from the B theme? Admittedly, I prefer the abridged version as I thought the material in question to be a little redundant, given that you do cover well and to great length both themes in the exposition. My thematic economy side of my brain would like to think that one should only state a theme until the listener is familiar enough with it to recognise said theme when it pops up in the development. If you wanted to keep said material for symmetry/form-related reasons/other personal preferences, though, by all means do so. I do love the B theme in all of its mellow sweetness, especially its first half. The second half of the B theme feels a bit static with the repeated notes, but coupled with the rolling left hand accompaniment, it does give a sense of floating/gliding, if that is what you desired. As I said, I quite like the harmony you move through in b. 91-105. A charming change in texture from b. 154 onwards! Development The fugato start of the development seems a bit dry? I can see where you are going with the material but I'm not super convinced by b. 164-187, though I suppose some pedal would help, or varying the articulation and texture a tad more even if a fugato. I didn't quite exactly get fugato vibes from it either, given how long the statement of the theme is. This is completely a suggestion, of course, and it is up to you as to how you'd like your sonata to work, but perhaps using only the first phrase of the theme (b. 164-166) and then building up a series of entries in other voices could be rather effective. I somewhat find this example to also be a bit dry, but I like the energy build-up of this fugato moment in the development of the fourth movement of Scriabin's Third Sonata, if you wanted something similar. Interesting, from b. 178 onwards in the fugato, you introduce another voice that is the B theme, or at least an echo of it, if I'm correct? I am a big fan of juxtaposing thematic material in the development sections of sonatas, if so... The material in b. 196-215 seems a bit overly virtuosic? I'm uncertain whether there might be some significance in the chords/harmonies you use here, but I think it'd be great to insert more of the existing thematic material in here, fragmented or whatnot. Overall, the development feels short to me, not in the least because I feel like you could've pulled out your compositional chops a bit more. Given the length of the exposition, I think this deserves a heftier development with varied treatment and inclusion of all three of the A and B themes and the B-octave motif. Trying to set the tempestuous A theme or the B-octave motif into the suave atmosphere/mood of the B theme, for example, or more chopping and changing, there are a wide variety of things you could do. Liszt can of course be a great source of ideas here! Recap Nice to restate the B-octave theme. Maybe the transition from the end of the development could be made smoother? I'm not sure though. I like the recasting of the textures in the recap of the A theme, but it feels a little airy? I'm not sure if you were going for that feel, and if you were, then I am in no place to complain. I suppose you could add some deep bass notes on the offbeats to give it a bit more body and hold them with your regular pedal, or see if the sostenuto pedal could work (though it could make the right hand arpeggios rather dry). I also appreciate the A theme being a bit shorter here... With b. 236 onwards and B theme, the energy seems to drop somewhat, with almost the exact statement of the original B theme but transposed. It is once again up to you, but you could also recap the B theme in a different texture, as you did with the A theme. I felt like the energy levels ought to have ramped up a bit more moving further and further down to match the energy of b. 282 onwards to the coda, possibly? At the moment, the ending feels mildly content with itself, though I would think the large chords and dynamics would suggest otherwise. With notation and formatting, I also admit I'm not the best person to offer advice, but there does seem to be the occasional odd things, e.g. whatever is stretching out b. 122 (the rest in the upper staff can also be removed there), the clipping of text at the end of the system at b. 248-250, and the slightly overzealous floating slur in b. 288. I've been told that with hairpins, it's best practice to state exactly which dynamic the hairpin starts and ends at, including double hairpins like < so >, but I am open to corrections. Yeah, that's most of what I have to offer with thoughts. Excellent playing, by the way, I almost forgot to mention! This already looks like a difficult sonata so far with this first movement and you interpreted it very pleasingly, at least to my ears, and in a very convincing way (though I suppose it is up to the composer yourself to decide whether it was served justice, lol).