00:15:157 (1) - Sick! But imo way too long for music-less part.
00:52:393 (3) - It's not aligned with the next slider. If you intended for it to be so, consider moving it to x322:y193
00:53:805 (5) - Same. Either rotate it CW a bit to make angle more noticable or align it with the previous slider.
00:46:746 (8) - Again. I feel like placing tick in such way makes the beatmap look sluggish. Imo it should be either aligned with elemts or be "not aligned" enough to make players be sure that it wasn't meant to be aligned.
Maybe something like these:
Note that I rutned slider a bit tho.
01:01:216 (2) - Personaly I'd move this slider down a bit for readability.
01:01:922 (1) - Alignment.
01:05:099 (3) - Again just my opinion. Rotate the whole thing till 01:06:863 (7) 6°-12°. It makes map look livelier.
01:09:334 (1) - Alignment.
01:12:157 (1) - Alignment. Though it doesn't look too bad. I'd bend the small slider to make them align like you did with previous one.
01:16:393 (1) - Same. After all its small thing that count in a slow beatmap like this.
01:18:157 (3) - Yep. Again. Maybe make it look like this:
01:23:452 (2) - Maybe move down those 2 sliders a bit to make it align with 01:20:981 (1) one?
01:33:687 , 01:30:157 and 01:29:452 - There are clearly should be some elemnts. The map is already slow to miss such precious oportunities to insert an element. Oh and also some 3-4 more before. I do get that you try to follow the cello but I feel strong urge to press something on every piano note. Especialy 01:29:099 here since its not covered by slider. Consider ending sliders on those notes. After all there is no distinct change in music to allow player to determine you suddenly need to follow the cello.
01:31:922 (1) - Alignment. Move it down just a tiny bit to make even space between sliders and the circle.
01:37:569 (1) - I like the triplets-sliders before but I feel like this slider is a bit too much. Consider making it just a circle at the same timestamp instead.
01:55:569 (4) - Alignment.
02:11:452 (1) - As I said before till this point there are a lot of missed piano notes. After that skipping them is somewhat justifiable.
02:47:452 (4) - I don't like the look of it =\
02:48:510 , 02:48:863 , 02:49:216 - There are no reason for hitsounds not to be here. Maybe split the big slider into two little ones?
02:53:805 (4) - ^again - there are 4 hitsounds that this slider covers. Consider splting it in two or make existing one shorter but to return one more time.
03:01:569 (2) - Alignment. Move the end of the slider up 1px. Use shift to make precise changes (just in case).
03:05:452 (1) - Alignment.
03:06:157 (2) - All your sliders tend to have small space between. Consider adding some here.
03:07:216 (3) - Those 2 circles moved a bit off becouse of stacking. I'd recommend placing this (first) circle directly under the previous slider.
03:11:099 (2) - I'd end the slider here then add circle 03:11:805 here.
03:17:099 (4) - This sounds good but its a bit unexpected. Consider adding similar things consistently through the map to make player feel some pattern in how the beatmap sounds.
03:20:275 (4) - Looks off.
03:37:922 (2) - Now there is a hitsound when there are no music sound for it. Maybe make a circle here 03:38:275 instead of the slider?
03:41:452 (2) - Alignment.
04:01:922 (1) - 4 sounds again.
04:11:805 (2) - Make some space. Move it to x168:y168
04:20:275 (3) - Alignment.
04:26:981 (4) - Consider rotating those verticaly aligned elemnts a liltle bit.
04:46:746 (6) - 4 sounds.
04:56:981 (3) - This one is way too long. There should be more elements.
05:06:863 (3) - Same.
05:17:805 (2) - Way too loud. Make it 70% at max.