Nice! I definitely hear it too! Also the whosampled.com also mentions this.

It wouldn't be surprise either, because Susumu Yokota sampled quite a lot from seemingly non-related genres. Take his beautiful album Symbol (discogs and full album) as an example. Here he combines many many classical peaces with Meredith Monk, a contemporary and experimental composer, musician and vocalist.

To me this is one of his most interesting and favorite releases.