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Themes taxonomy & song CPT

Published on July 12, 2025

Last updated on June 6, 2026

This week continued the structural improvements following last week’s migration of the legacy footnotes system. While the CPT‑based footnote architecture is now in place, several new features and enhancements were added to increase semantic richness and cross‑linking throughout the site.

Themes taxonomy introduced

A new non‑hierarchical theme taxonomy was created to group symbolic, recurring motifs across all CPTs — especially lyrics, quotes, and concepts.

  • Each theme (e.g., “Open your eyes”, “Learning to let go”) is treated like a symbolic hashtag.
  • Supports CPTs like Lyrics, Quotes, Concepts, Books, Movies, and more.
  • A /themes index page was created using the [theme_index] shortcode.
  • Each individual theme has its own /theme/[slug] archive using a custom taxonomy-theme.php template.
  • New excerpt tagline: “Recurring symbolic structures that exist throughout lyrics, quotes, and other expressions.”
  • Themes are now integrated into the [referenced_works] shortcode output with a linkable list at the bottom of footnotes (shown with a thread icon).

Song CPT display enhancements

Continued refinement of the Songs Featured CPT:

  • Album cover thumbnails now square (styled via .song-grid).
  • YouTube embeds auto‑rendered if URL is present.
  • Each song page links to:
    • Related lyrics (via Lyric CPT).
    • Related chapters that mention the song.
  • A new archive template (page-songs-referenced.php) was created for browsing referenced tracks.
  • Footnotes logic for featured song display was cleaned up and now includes:
    • Album cover thumbnail
    • Song title
    • Clickable video link (video icon)

Concept relationship linking

Concept CPT pages now support Related Concepts, enabling custom cross‑linking between terms like “assumption” and “presupposition.”

  • Uses an ACF Post Object or Relationship field for manual control.
  • Related terms now display at the bottom of each Concept page in a clean list.

Footnotes UX enhancements

  • A new title — “Notes & References” — is now rendered above each chapter’s footnotes block (<h3>).
  • Ensures a more professional, scannable section header.
  • Emoji headers, image styles, and link formatting were further standardized.
  • CPT reference logic was expanded to query by theme taxonomy.