Suggestions for [4k] Lays NM
References lanes as 0 1 2 3
00:04:263 (4263|3,4263|2) - and 00:07:087 (7087|3,7087|2) - are different sounds with identical notes. I suggest shifting a Hold from 2 to 1 at 00:07:087. Follow up shifting 00:07:440 (7440|0) - to 2
00:23:410 Inconsistent, add a note here.
Inconsistent between 00:31:793 (31793|1,31881|2,31969|3) - and 00:33:028 (33028|1,33116|2,33204|3)
Change up at 00:33:028 so that this starts on the white tick.
00:35:852 (35852|0,36028|1,36028|0) - make this similar to to up above
00:37:087 00:37:087 (37087|1,37263|1,37440|2,37616|2,37793|3,37969|3,38146|3,38146|1,38322|1,38499|0,38675|2,38852|2,39028|0,39204|0,39381|3) - - This could be better, try to match the pitch a little more. Maybe like [this? https://osu.ppy.sh/ss/15990429/e6ec]
01:13:087 (73087|0,73175|1,73263|2,73352|3) - ctrl + h, then you can add a note at 01:12:999 (72999|0)
Overall it's ok. But it certainly needs more adjustments then what I can suggest.
PS: Hitsounds on their own are catchy af