I was surprised that they didn't use a Jaccard distance when I looked into the paper, but I never really tested out why their more complicated method was requir

I was surprised that they didn't use a Jaccard distance when I looked into the paper, but I never really tested out why their more complicated method was required. The core insight (that note timing / beat is a fingerprint) is money, but the rest of the math seemed unnecessarily complicated. Would really be interested if someone has tried other approaches and can comment.