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 Oct 1, 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_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?"

calculate_modulation_paths

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

get_enharmonic_mapping

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

get_key_signature_details

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

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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