When you download from Bandcamp, the zip file comes with no directory structure, so this gives it one. Explanation: https://jimkang.com/weblog/articles/bandcamp-unzip/

unzip-bandcamp.sh

#!/bin/bash

for file in *.zip
  do
    filename="${file%.*}"
    # Filenames can't contain /. So, I wonder
    # what Bandcamp would do if they had AC/DC?
    unzippath=$(echo "$filename" |sed -e 's/ - /\//')
    mkdir -p "$unzippath"
    unzip "$filename" -d "$unzippath"
  done