How Tonecrafted checks what it teaches.

Tonecrafted turns theory data into interactive guitar tools and reference pages. The goal is not to sound authoritative. It is to make each claim traceable to the same music rules the product actually uses.

One source for notes and intervals

Fretboard scale guides are generated from the same root notes, interval formulas, enharmonic spelling rules, and teaching data used by the interactive trainer. A written page and the tool do not maintain separate copies of the music.

Key-aware spelling

The spelling engine chooses note names in the context of the key and scale. That is why a flat-key scale can show flats instead of replacing everything with easier-to-code sharps, and why the seven-note scales avoid repeating or skipping letter names when the theory requires a distinct letter for each degree.

Generated coverage and automated checks

The build produces a guide for every published root-scale combination. Automated tests verify scale intervals, note order, key-aware spellings, page routes, canonical links, and the generated Worker before deployment. The current test output reports the exact number of generated pages, so this page does not hardcode a count that can become stale.

What automation does not prove

Automated checks are not the same as human musical review. Tests catch contradictions, invalid pitches, missing combinations, broken links, and build drift. They do not prove that every explanation is the clearest possible way to teach a guitarist. New teaching layers still receive visual, playability, and plain-language review.

What stays free

The interactive tools and scale guides remain free. A printable reference pack may package the same material for convenience, but it does not remove learning features from the public tools.