Today I’m posting a full cover of that.
「胡散の香り」is one of my favorite tracks from the novel, and I think it’s because it captures the spirit of the first episode very well: a suspicious, sneaky first section with “the siblings” arguing and undermining each other, and the mysterious Witch watching it all and laughing.
If you’re interested in reading the novel (part mystery, part fantasy), you can check out the English translation site “The Witch Hunt”. Let me know, too—since it’s “part mystery” there’s plenty to discuss. I’m also happy to help if you have any troubles getting it set up.