http://book.klll.cc/ebooks/subject/939.opds?sort_order=release_date 2025-09-21T10:42:28Z Books about Ballad operas -- Librettos (sorted by release date) Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-09-21T10:42:28Z https://book.klll.cc/ebooks/subject/939.opds?sort_order=title Sort Alphabetically by Title 2025-09-21T10:42:28Z https://book.klll.cc/ebooks/subject/939.opds?sort_order=downloads Sort by Popularity 2025-09-21T10:42:28Z https://book.klll.cc/ebooks/25063.opds The Beggar's Opera; to Which is Prefixed the Musick to Each Song John Gay 2025-09-21T10:42:28Z https://book.klll.cc/ebooks/2421.opds The Beggar's Opera John Gay