not bad
The effect seemed too strong and out of place at first, because it shouldn't be done as much in the early section, up until around 0:58. After that it is fine.
Song would be better if it was normal up until that point, then changes to how that effect is now either at 0:58 or 1:28 or so.
The way it is now it gives away the surprise and sounds out of place as well.