This is an ambitious and challenging work. It reminds me of two pieces I saw workshopped earlier this year, as part of the LSO's Panufnik Scheme (at least in terms of complexity of the scoring). Not sure I can offer anything useful, since your scoring is far more advanced than mine! I did spot one or two issues in the engraving that you're probably already aware of. These were: A misspelling on Page 2 ('deturned' instead of 'detuned' in the Viola instructions). Awkward beaming alignment in Bar 35 of the celesta part (one of the noteheads seems to be floating away from the beam, and is missing a stalk). Misaligned brackets in Bars 31 and 32 of the Doublebass part. Bar 74 and elsewhere: not sure why you write Celest' instead of Celesta? Looks a bit odd. Musically I really enjoyed it, and liked how you used the extended techniques. These were not there just for the sake of it; but to create a useful effect within the narrative of the music. I had to look up some of your directions (like gioiosamente), as I'd never seen them before! Sorry I can't be of more help, Alex