MCP For Claude Marketplace
Circle of Fifths Navigator

Circle of Fifths Navigator MCP Connector for Claude

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Navigate musical keys, identify tonal relationships, and plan modulations using the Circle of Fifverts framework.

4 tools Official Updated Jun 28, 2026 Official Vinkius Partner
More Details Connect to Claude

The Circle of Fifths Navigator is a specialized tool for musicians to explore musical keys and their relationships. Using tools like get_key_neighbors, you can instantly find the dominant and subdominant keys, as well as relative major and minor scales. The get_key_signature_details tool provides technical details including accidental order and available modes. For more complex compositions, use calculate_modulation_paths to identify natural modulation paths based on distance on the circle, or get_enharmonic_mapping to find equivalent keys with different notation.

music-theorycircle-of-fifthscompositionmusicologyscalesmodulation

4 tools expose this connector's capabilities to your AI agent.

get_enharmonic_mapping

Answers "Is there a different way to write this key using different notation?"

get_key_neighbors

g., "G Major", "Eb Minor") and returns its dominant, subdominant, relative major, and relative minor. Answers "Who are the closest musical relatives and neighbors to this specific key?"

get_key_signature_details

Answers "What are the technical components of this key's scale and its available modes?"

calculate_modulation_paths

Answers "Which keys can I move to for a natural modulation, and how far away are they?"

See how to talk to your AI agent using Circle of Fifths Navigator.

Who are the closest musical relatives and neighbors to G Major?

For G Major, the dominant key is D Major, the subdominant is C Major, the relative minor is E Minor, and the relative major is G Major.

What are the technical components of Eb Minor?

Eb Minor has 6 flats (Bb, Eb, Ab, Db, Gb, Cb) and includes modes such as Aeolian, Dorian, and Phrygian.

Find a natural modulation path from C Major with a max distance of 1.

From C Major, you can naturally modulate to G Major (distance +1) and F Major (distance -1).

Use the `get_key_neighbors` tool by providing the name of your starting key (e.g., 'G Major'). It will return the dominant, subdominant, and relative major/minor keys.

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