GA Ask — Query the Guitar Alchemist AI Agent

How to Execute

Step 1: Classify the User's Question

Determine which tool bundle(s) the question would invoke:

• Single-bundle question: "Notes in Cmaj7?" → theory-tools only
• Multi-bundle question: "Show comfortable Bbmaj9 voicing with fingering" → theory-tools + technique-tools
• Ambiguous: "Tell me about Cmaj7" → ask clarification OR default to theory-tools with note
• Out of domain: "What's the weather?" → decline per constitutional Article 1

Step 2: Check MCP Server Availability

The GA MCP server provides live computation via tools. Check if it's reachable:

# If GA MCP server is configured as an MCP server in this Claude Code session,
# the tools will be available as mcp__ga__* in ToolSearch.
# Search for them:

Use ToolSearch with query "ga music theory" to find any available GA MCP tools.

If MCP server is available: Call the appropriate tools directly and compose the answer from tool outputs.

Complete Tool Inventory (tested 2026-04-04, all 60 tools)

48 tools work out-of-the-box (pure in-process, no external deps). 12 tools need GA API server running on port 7001 (HTTP-backed endpoints).

Working Tools by Category

Diagnostics:

• Echo(message) → "Hello from C#: <message>"
• ReverseEcho(message) → reversed string
• ReloadConfig() → true

Scales (pure math from binary encoding):

• GetAvailableScales() → 100+ scales with binary IDs (Major=2741, MinorPentatonic=1193)
• GaScaleByName(name) → full scale info (notes, category, alt names, usage)
• GaScaleById(id) → lookup by binary ID
• GetCardinalities() → 0 through 12 (Monotonic → Dodecatonic)
• GetAvailableModes() → 150+ modes incl. melodic minor, bebop, exotic

Keys:

• GetAllKeys(), GetMajorKeys(), GetMinorKeys() → list keys
• GetKeyNotes(keyName="Key of A") → notes in key
• GetKeyAccidentals(keyName) → "F# C# G#"
• GetKeyPitchClasses(keyName) → "1 2 4 6 8 9 E"
• GetKeySignatureInfo(keyName) → full JSON (mode, root, accidentals, notes)
• GetKeySignatures() → all 15 signatures with related keys
• GetKeysByAccidentalCount(count=N) → keys with N accidentals
• GetKeysByAccidentalKind(accidentalKind="Sharp"|"Flat")
• GetKeyByRootAndMode(rootNote="A", mode="Major") → "Key of A"
• GetParallelKey(keyName), GetRelativeKey(keyName)
• GetCircleOfFifthsPosition(keyName) → integer position
• IsNoteInKey(keyName, noteName) → bool
• CompareKeys(keyName1, keyName2) → common notes + distance

Modes:

• GetModeInfo(modeName="Dorian") → intervals, notes, description
• GetModalSetClasses(cardinality=N) → Forte-ordered set classes

Chords (DSL closures, fast in-process):

• GaParseChord(symbol="F#m7b5") → JSON {root, quality, components, bass}
• GaChordIntervals(symbol="Cmaj9#11") → "P1, M3, P5, M9..."
• GaChordToSet(symbol="Dm7") → pitch set + ICV + Forte + prime form + OPTIC-K layer
• GaDiatonicChords(root="C", scale="major") → "C, Dm, Em, F, G, Am, Bdim"
• GaTransposeChord(symbol, semitones=7) → transposed symbol
• GaCommonTones(chord1, chord2) → shared notes with roles
• GaChordSubstitutions(symbol="G7", key="C", scale="major") → ranked subs + tritone sub
• GaRelativeKey(root="C", scale="major") → "A minor"
• GaPolychord(chord1="C7", chord2="D") → merged set with Forte number
• GaIcvNeighbors(symbol, maxDistance=1) → nearby ICV chords
• GaSetClassSubs(symbol="Dm7") → T/I equivalents (all m7 chords)
• GaEasierVoicings(chord="Bbmaj9") → alternatives + substitution hints

Progressions (in-process):

• GaAnalyzeProgression(chords="Cmaj7 Am7 Dm7 G7") → "Key: C major (4/4), I vi ii V"

Set Theory (atonal):

• GetSetClasses(cardinality=4) → all 224 Forte set classes
• GetCardinalities() → cardinality labels

Instruments:

• GetAvailableInstruments() → "Guitar"
• GetAvailableTunings(instrument="Guitar") → "Standard, Drop D"
• GetTuning(instrument="Guitar", tuningName="Standard") → "E2,A2,D3,G3,B3,E4"

DSL & Search:

• GaListClosures() → 30+ closures (domain., agent., tab., pipeline., io.*)
• TranspileGaScript(source) → F# ga{} expression
• GaSearchTabs(query) → web search for tabs

Tools Requiring GA API (port 7001)

Start with: cd C:/Users/spare/source/repos/ga && dotnet run --project Apps/ga-server/GaApi

These wrap HTTP calls to https://localhost:7001/api/*:

• GetDiatonicChords(key="C major") — /api/contextual-chords/keys/{key}
• GetBorrowedChords(key="C major") — /api/contextual-chords/keys/{key}/borrowed
• GetScaleChords(scaleName, rootName) — /api/contextual-chords/scales/*
• GetModeChords(modeName, rootName) — /api/contextual-chords/modes/*
• GetChordVoicings(chord, maxDifficulty?, minFret?, maxFret?, noOpenStrings?) — voicing search
• AskChatbot(question) — chatbot endpoint

Other known-failing (possibly FSI/API dependencies):

• GaKeyFromProgression(chords=array), GaProgressionCompletion, GaArpeggioSuggestions (GuitaristProblemTools — need investigation)
• EvalGaScript, GaInvokeClosure(name, inputsJson), GetClosureSchema(name), ListGaClosures (FSI session)
• GetNeighboringKeys (serialization issue)

Binary scale IDs confirmed match grammars/music-scale-catalog.ebnf design. GaChordToSet output explicitly references "OPTIC-K layer: STRUCTURE (dims 6–29, w=0.45)" matching our architecture contract.

Parameter Name Quick Reference (gotchas)

If MCP server is NOT available (fallback mode per directive DIR-2026-03-21-002):

• Answer from Demerzel governance artifacts: grammars in grammars/music-*.ebnf, FAQ in state/streeling/faq/music-theory-faq.md, courses in state/streeling/courses/*/en/*.md
• Prefix response with: "Note: Answering from static governance data (MCP server unreachable). Live computation unavailable."

Step 3: Ground the Answer

When answering, follow the orchestrator test cases in tests/behavioral/ga-orchestrator-cases.md:

• TC-ORC-01 style: Direct theory answer with correct notes, intervals, spellings. Cite grammars/music-theory.ebnf productions used.
• TC-ORC-02 style: Multi-tool compound answer. Theory provides notes, technique provides fingering/comfort, merged response explains the combined picture.
• TC-ORC-03 style: Multi-turn refinement. Read blackboard state from state/ga-sessions/ if a session_id is provided.
• TC-ORC-04 style: Out-of-domain decline. Do not fabricate.
• TC-ORC-09 style: Malformed data handling. Don't fabricate missing fields.
• TC-ORC-10 style: Conflicting results surface with hexavalent C (contradictory) truth value.

Step 4: Apply Constitutional Constraints

Every answer MUST comply with:

• Article 1 (Truthfulness): No fabrication. If uncertain, say so with hexavalent U (unknown).
• Article 2 (Transparency): Show reasoning and tool calls made.
• Article 7 (Auditability): Log which tools/sources were consulted.
• Confidence thresholds: Per policies/alignment-policy.yaml. Below 0.7 → add confidence note. Below 0.5 → ask clarification.

Step 5: Format the Response

Structure the answer:

## Answer

[Direct response to the question]

## Reasoning

[Brief explanation — intervals, voice leading, fingering rationale, etc.]

## Tools Consulted

- `theory-tools.chord-analyze` (if MCP available) OR
- `grammars/music-theory.ebnf` § Section 1 (Chord Construction) (fallback)
- `state/streeling/faq/music-theory-faq.md` Q7 (if applicable)

## Confidence

T(0.92) — verified computation, standard music theory

Quick Invocation Patterns

User says: "Ask GA what chord notes are in F#m7b5" → Route to theory-tools, return notes + intervals + enharmonic context

User says: "What does the guitar agent say about comfortable voicings for Bbmaj9?" → Multi-tool: theory (notes) + technique (comfort)

User says: "GA, design me a 20-minute practice routine for modal improvisation" → coach-tools + teacher-tools

User says: "Does GA have ear training exercises for identifying major 7 chords?" → teacher-tools lookup, reference state/streeling/courses/guitar-alchemist-academy/en/gaa-002-training-your-ear.md

Validated Fallback Lookups (no MCP required)

Tested 2026-04-04 — these work in pure-fallback mode without the GA MCP server:

Chord construction → theory-tools fallback

• Source: grammars/music-theory.ebnf § chord_construction (quality terminal)
• Grep pattern: grep -B1 -A3 "<chord-quality>" grammars/music-theory.ebnf
• Compute intervals manually: root + semitone offsets (m3=3, M3=4, P5=7, d5=6, m7=10, M7=11, M9=14)

Voicing lookup → theory + technique fallback

• Source: grammars/music-theory.ebnf § jazz_voicing + state/streeling/courses/music/en/mus-005-jazz-harmony.md § Section 3
• Known voicing shapes (rootless A/B, drop-2 string sets 6-5-4-3, 5-4-3-2, 4-3-2-1)

Practice routine → coach + teacher fallback

• Source: state/streeling/courses/guitar-alchemist-academy/en/gaa-003-improvisation-foundations.md for improv
• Source: state/streeling/courses/guitar-alchemist-academy/en/gaa-002-training-your-ear.md § Daily Habit framework (10-15 min cycles)

Out-of-domain decline → constitutional check

• Article 1 (Truthfulness): do not fabricate
• Article 9 (Bounded Autonomy): decline politely, suggest in-domain alternatives

Response Format (from validation)

Structure responses this exact way for consistency:

**Answer**: [direct, concrete — notes/voicing/exercise]

**Reasoning**:
- [theory/computation shown]
- [multi-tool explanation if multi-bundle]

**Tools consulted**:
- [specific grammar file § section] OR
- [course file § section] OR
- [FAQ file § question]

**Confidence**: T/P/U/D/F/C(0.NN) — [one-line justification]

Always cite file § section so users can verify.

Example Test Scenarios

From tests/behavioral/ga-orchestrator-cases.md, these are the scenarios to handle gracefully:

1. Simple theory (TC-ORC-01): "What are the notes in F#m7b5?"
2. Multi-bundle (TC-ORC-02): "Comfortable Bbmaj9 voicing with fingering"
3. Multi-turn (TC-ORC-03): "Simpler voicing" (references prior turn)
4. Out of domain (TC-ORC-04): "What's the weather today?"
5. 5-turn context (TC-ORC-05): Conversation preservation
6. Skill adaptation (TC-ORC-06): Beginner vs advanced responses
7. Tool failure (TC-ORC-07): Graceful degradation
8. Streaming (TC-ORC-08): Partial response streaming
9. Malformed tool data (TC-ORC-09): No fabrication
10. Conflicting results (TC-ORC-10): Surface with C truth value
11. Token pruning (TC-ORC-11): Compact context without losing preferences

Configuration

• GA MCP server: Configured per contracts/directives/ga-mcp-integration.directive.md (DIR-2026-03-21-002)
• Fallback data sources: grammars/music-*.ebnf, state/streeling/faq/*, state/streeling/courses/*/en/*.md
• Session persistence: state/ga-sessions/<session_id>.json conforming to schemas/blackboard-state.schema.json
• Personas: personas/composer-agent.persona.yaml, personas/music-teacher.persona.yaml, personas/guitar-coach.persona.yaml (capability bundle docs)

Not This Skill's Job

• Running the GA chatbot server → use ga-ralph skill
• Building new GA features → use ga-ralph skill
• Modifying GA code → go to the ga repo directly
• Governance audits → use demerzel-audit skill

Demo Mode

When the user invokes the skill with "demo", "examples", "show me", or no specific question, run the 3 curated demo questions below. These showcase single-bundle, multi-bundle, and injury-safety routing.

Present each demo as a separate mini-response, formatted exactly like a real answer.

Demo 1: Beginner Theory (Single Bundle — theory-tools)

Question: "What notes are in a Dm7 chord?"

Answer: Dm7 contains D, F, A, C.

Reasoning:

• D (root) + F (minor 3rd, 3 semitones) = minor triad foundation
• • A (perfect 5th, 7 semitones) = complete minor triad
• • C (minor 7th, 10 semitones) = Dm7 (the "jazz" minor seventh)

This is the ii chord in C major — everywhere in jazz as the start of ii-V-I (Dm7 → G7 → Cmaj7).

Guitar positions (standard tuning):

• Open: x-x-0-2-1-1
• Barre at 5th fret: 5-5-3-5-3-5
• Rootless jazz voicing (A-D-G-B strings, 5th fret area): 5-3-5-6

Tools consulted:

• grammars/music-theory.ebnf § chord_construction (quality: minor_7)
• state/streeling/courses/music/en/mus-005-jazz-harmony.md § 2 (ii-V-I Universe)

Confidence: T(0.98) — fundamental music theory

Demo 2: Intermediate Improvisation (Multi-Bundle — theory + composer)

Question: "What scale should I use to solo over Cm7-F7-Bbmaj7?"

Answer: This is a ii-V-I in Bb major. Two approaches:

Option A (simple): Use Bb major throughout — always works.

Option B (more color):

Advanced tension: Over F7, try F altered (7th mode of Gb melodic minor) for maximum pre-resolution pull.

Practice tip (from gaa-003 § 4): Target the 3rd of each chord on beat 1 (Eb→A→D). Ear hears the changes move.

Tools consulted:

• grammars/music-theory.ebnf § chord_scale_pair, melodic_minor_mode
• state/streeling/courses/music/en/mus-005-jazz-harmony.md § 6 (Chord-Scale Theory)
• state/streeling/courses/guitar-alchemist-academy/en/gaa-003-improvisation-foundations.md § 4 (Chord-Tone Targeting)

Confidence: T(0.92) — standard jazz pedagogy

Demo 3: Technique/Injury Prevention (Single Bundle — technique-tools, Article 1 priority)

Question: "My pinky finger gets tired after 10 minutes of barre chords. What should I do?"

Answer: Stop and rest for now. Pinky fatigue after 10 minutes of barres is common and fixable, but pushing through risks tendon strain.

Immediate checks:

1. Thumb position — behind the neck (opposite middle finger), NOT wrapped over top
2. Wrist angle — close to straight, not bent
3. Grip pressure — barely enough for clean notes, not a death grip

Structural fixes:

Red flags — see a hand therapist if: persistent pain after rest, numbness/tingling, swelling, night pain, weakness lifting objects.

Tools consulted:

• tests/behavioral/technique-agent-cases.md § TC-TA-02 (injury prevention), TC-TA-03 (stretch analysis)
• grammars/music-guitar-technique.ebnf § technique

Confidence: T(0.85) — standard guitar pedagogy. Not medical advice.

After the 3 demos

Finish with:

Those 3 examples show how ga-ask routes to different tool bundles. Try asking your own question — any music theory, guitar technique, tab parsing, composition, synthesis, pedagogy, or practice topic. I'll cite sources and compute from first principles when the MCP server is offline.

See Also

• contracts/ga-orchestrator-architecture.md — the architecture this skill queries
• contracts/ga-mcp-tool-bundles.md — detailed tool bundle specs
• contracts/a2a-mcp-routing.md — agent→tool ownership map
• tests/behavioral/ga-orchestrator-cases.md — 11 behavioral test cases
• state/streeling/faq/music-theory-faq.md — curated Q&A fallback