How do I transpose a song?

You can use the `transpose_chords` tool by providing the original chord sequence, the source key, and the target key.

Can I choose between sharps and flats?

Yes, when using `transpose_chords`, you can set the `preferSharps` parameter to true or false to control the accidental preference.

What happens if I provide an invalid key?

The `validate_key_existence` tool will check if the key is valid. If you attempt to transpose using an invalid key, the tool will return an error.

Song Key Transposer MCP Connector for Claude

A+

Transposes chord sequences between musical keys with accidental preference.

4 tools Official Updated Oct 1, 2026 Official Vinkius Partner

More Details Connect to Claude

This MCP server provides tools to manipulate musical notation. Use transpose_chords to shift a sequence of chords from a source key to a target key, or get_transposition_interval to find the semitone distance between keys. It also includes parse_chord_symbol for breaking down chord components and validate_key_existence to ensure musical keys are valid.

musicchordstranspositionnotationtheory