Is Prelude to Paradise the same song as one of Hunter x Hunter (2011)'s soundtrack?
I could not find an exact match to this song searching through the OST's I will agree that it does seem familiar to the Zoldyck Family theme at about 20 seconds into the Zoldyck theme they sound very close but there is a difference. As far as for link there is no real way to tell other than to ask the composer of Prelude to Paradise. ref(HxH Zoldyck Theme)