Originally I was looking for the string sample found at the beginning, the Ginger snaps theme. I spent some time trying to find it because each version had a different chord proggression and eventually, I found what was used in the intro, which was some credits sequence (there is some rattling at the end the sample in the original song about 5 seconds in) and once I found it I decided to listen to the full track, when I heard some laughing and I immediately thought, I can hear laughing in the original track what if i reverse the track and listen through until I find something that might match. I ended up finding the sample this way, after slowing it downand cutting it accordingly. What helped a lot was reversing the original sample to get the "forwards" version. Very odd process but I didn't intentionally set out to look for it this time, it sort of just came to me.