I've been revising every hitsound. The 2nd part of the song is similar to the 1st one, so I didn't write those changes.
These are the changes: (W=whistle, C=clap, F=finish)
Easy:00:50:959 (1) - Volume up 2 ticks (only the beginning, 1st and 2nd repetition of the slider)
01:02:387 (1) - W not in the sliderbody
01:03:101 (2) - W in the whole slider
01:13:815 (1) - W not in the sliderbody
01:14:530 (2) - W in the whole slider. Added F at the end, and made it Normal
Normal:01:03:458 (4) - Added W
01:14:530 (3) - ^
01:14:887 (4) - ^ and changed it to Normal
Lunatic:00:08:548 (4,5) - Removed W
00:12:387 (1) - Removed W at the beginning
00:15:244 (5) - Added C
00:50:959 (1,2,3) - Volume up 2 ticks
00:52:922 (4) - Added W at the end
00:53:458 (5) - Added W at the beginning
00:57:030 (7) - ^
00:57:744 (1) - Added W to the beginning and the sliderbody
01:03:458 (4) - Removed W at the end
01:03:994 (1,2) - Removed W
01:04:351 (4) - Added W
01:04:887 (8) - Removed W at the 2nd and the end
01:05:422 (1,2) - Removed W
01:08:458 (7) - Removed W of the sliderbody and the end
01:09:172 (1) - Added W to the beginning and the sliderbody
01:14:887 (4) - Added W, also changed this note to Normal
It's ready to mod again