The overall goal of this was to write a decent melody. It's always been a weak spot of mine, as I usually stuck to motivic and rhythmic development. I'm glad you found this enjoyable, thanks for listening!
You're right, I didn't adhere to a specific scale in this, but instead went with the chords. Not sure if that's good or bad, maybe it's a jazz way of looking at things. This piece actually started over an improvisation that I'd always do over the A section chords, and eventually lead to writing a piece with it. If you're interested, I mainly stuck to the Ebm/Gb scale, but the Ebb7+5 I used whole tone, and the Dbbdim7 I used the dim. scale.
I'm glad you dug the fioraituras, they were a first for me. You're right, I was thinking Bb phrygian dominant over that. It's a easy cool trick to use that scale over the the V chord in minor, maybe adding touches of that A nat. as a color note on the Bb turns.
Those sections took me the longest to write, as I went through countless failed attempts at trying to notate it. I tried doing an abnormal measure where you can just fit all the notes in with a smaller notehead size, but ultimately it never panned out. I was originally going to just record myself playing those sections, because you're right; they're not supposed to be all even. I liked the accelerandos, but ultimately that's a gift for the performer to play as they wish. Any of the sections I wrote expressivo, I wanted the performer to have control over tempo.
You're too kind, thanks for the encouraging words. I have to admit, I've done so much "non-concert hall" music over that last few years that I was beginning to feel like I didn't have this style of music in me anymore. It was fun to write for piano again, I'll try to keep posting this stuff. Hell, I might even learn it to tempo at some point and record it myself. I'm really glad you enjoyed it, and thanks again for the help with notating! Next time I'll save myself some trouble and write in C lol.