compose-sacred-music

compose-sacred-music is a skill for Claude Code from pjt222/agent-almanac. It costs 108 tokens per session (4,058 once invoked), scanned A, original, MIT.

A guide to composing or studying sacred music in the medieval style associated with Hildegard von Bingen. It explains musical modes, melody, setting words to music, medieval notation, and the religious setting of different types of chants.

In plain words
What is it for?
Use it to create or analyze chants, prepare music for performance or teaching, or study Latin sacred texts and medieval music notation.
Why use it?
It helps when you need historical context or want a piece to follow the musical practices associated with Hildegard’s work.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Part of the agent-almanac plugin — 122 skills, 76 agents shipped together

Good fit Use it to create or analyze chants, prepare music for performance or teaching, or study Latin sacred texts and medieval music notation.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/pjt222/agent-almanac/compose-sacred-music
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add pjt222/agent-almanac --skill compose-sacred-music
Clone the repo
git clone --depth 1 https://github.com/pjt222/agent-almanac

Made for: Claude Code.

Or install agent-almanac, the plugin that ships this one along with the rest of its 122 skills, 76 agents.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for compose-sacred-music

README.md
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Your own site
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Your own site · 80×15
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Per session 108 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,058 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00108 $0.04058
Opus 5 $0.00054 $0.02029
Sonnet 5 $0.00022 $0.00812
Haiku 4.5 $0.00011 $0.00406

Measured 8d ago against content hash c654571db8f7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

compose-sacred-music scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

i18n/caveman-lite/skills/compose-sacred-music/SKILL.md · 333 lines

How it starts

The opening of the file, as written. The whole thing — 333 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Compose Sacred Music

Compose or analyze sacred music in Hildegard von Bingen's distinctive style, following her Symphonia harmoniae caelestium revelationum and modal composition principles.

When to Use

  • You want to compose a new piece of sacred music in Hildegardian style
  • You need to analyze an existing Hildegard chant for structure, mode, and text-setting
  • You are researching medieval modal music and neumatic notation
  • You want to understand the liturgical context of Hildegard's compositions
  • You are preparing to perform or teach Hildegard's music
  • You need guidance on text-setting for Latin sacred texts

Inputs

  • Required: Purpose (compose new piece OR analyze existing piece)
  • Required for composition: Sacred text (Latin preferred, English acceptable for study)
  • Required for composition: Liturgical context (antiphon, sequence, responsory, hymn)
  • Required for analysis: Title of Hildegard piece to analyze (e.g., "O vis aeternitatis")
  • Optional: Feast day or liturgical season (influences modal choice)
  • Optional: Intended performer experience level (simple syllabic vs. virtuosic melismatic)
  • Optional: Mode preference (if composing)

Procedure

Step 1: Modal Selection (if composing) or Identification (if analyzing)

Choose or identify the liturgical mode that governs the melodic structure.

The Eight Church Modes (Medieval System):
┌──────┬─────────┬────────────┬──────────┬─────────────────────┐
│ Mode │ Name    │ Final Note │ Range    │ Character           │
├──────┼─────────┼────────────┼──────────┼─────────────────────┤
│ 1    │ Dorian  │ D          │ D-D      │ Serious, meditative │
│      │ (auth.) │            │ (octave) │ Hildegard's most    │
│      │         │            │          │ common              │
├──────┼─────────┼────────────┼──────────┼─────────────────────┤
│ 2    │ Dorian  │ D          │ A-A      │ Reflective, subdued │
│      │ (plag.) │            │ (below)  │                     │
├──────┼─────────┼────────────┼──────────┼─────────────────────┤
│ 3    │ Phrygian│ E          │ E-E      │ Mystical, intense   │
│      │ (auth.) │            │          │                     │
├──────┼─────────┼────────────┼──────────┼─────────────────────┤
│ 4    │ Phrygian│ E          │ B-B      │ Penitential, dark   │
│      │ (plag.) │            │          │                     │
├──────┼─────────┼────────────┼──────────┼─────────────────────┤
│ 5    │ Lydian  │ F          │ F-F      │ Joyful, bright      │
│      │ (auth.) │            │          │ (avoids B♮-F tritone│
│      │         │            │          │ with B♭)            │
├──────┼─────────┼────────────┼──────────┼─────────────────────┤
│ 6    │ Lydian  │ F          │ C-C      │ Gentle, pastoral    │
│      │ (plag.) │            │          │                     │
├──────┼─────────┼────────────┼──────────┼─────────────────────┤
│ 7    │ Mixolyd.│ G          │ G-G      │ Triumphant, regal   │
│      │ (auth.) │            │          │                     │
├──────┼─────────┼────────────┼──────────┼─────────────────────┤
│ 8    │ Mixolyd.│ G          │ D-D      │ Warm, contemplative │
│      │ (plag.) │            │          │                     │
└──────┴─────────┴────────────┴──────────┴─────────────────────┘

Hildegard's Modal Preferences:
- Mode 1 (Dorian authentic): Most common — used for Marian texts, visions,
  theological depth
- Mode 5 (Lydian authentic): Second most common — for joyful, celebratory texts
  (Trinity, angels, saints)
- Mode 3 (Phrygian): Rare but striking — for penitential or mystical intensity
- Plagal modes: Less common in Hildegard; she prefers wide, soaring melodies
  that require authentic (higher) range

Modal Selection by Liturgical Context:
- Marian feasts → Mode 1 (Dorian)
- Trinity, angels → Mode 5 (Lydian) or Mode 7 (Mixolydian)
- Penitential seasons (Lent) → Mode 4 (Phrygian plagal)
- General saints → Mode 1 or Mode 8

Read the full file on GitHub · 333 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 8d ago First seen · 333 lines · 108 tokens per session scan A c654571db8f7

Subscribe to this mod's changes

compose-sacred-music is a skill published in the GitHub repository pjt222/agent-almanac (32 stars, last pushed yesterday), licensed MIT. It adds 108 tokens to every session and 4,058 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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