Here are some things that stuck out to me. The first sentence is what I heard last night after just a few listens, the rest are thoughts after a few more listens this morning. Overall an excellent piece of work, though.
1) Love where you start to go at the 0:12 mark, but think it ends just a bit abruptly. I know runs like that typically aren't long in this type of music, but it still feels like it was cut short, even if only by a few notes (upwards, maybe end with a quick scream/harmonic if possible). After a few more listens, I think it lacks a sense of direction in that I don't feel like it goes anywhere, more so than it being abrupt. Its just kind of there, although it does create a very nice break, and is technically amazing. Maybe restructuring it with a clear high and/or low point that only happen once (each) since it is such a condensed run.
2) Now that I've listened to it a little more, I feel kind of like a held bend at the end of the run at 1:26 (or in place of the last two beats) might add a nice bit of tension that moves the listener into the last bit of the song in a different way. I think with the run that's there it creates a very "easy" progression for the listener, where as a hold might make it a little more exciting. Not sure how to word it, but the run feels "normal."
3) When/If lyrics get added, all the above points probably don't matter or disappear anyway.
Those are just more "feelings" and interpretations as a listener, because I couldn't even dream of playing anything close to that level. As always, take my opinions with a grain of salt, as I'm no music producer. Looking forward to hearing the finished version.
That's the first thing I thought of when I got about 5 seconds in, and its not necessarily a bad thing.
