Tools
Each one answers a question musicians ask often, and all of them answer through the same theory engine that backs the topics — which is why what a tool says and what a topic says never disagree.
- Chord dictionary
Any chord symbol: the notes it names, the staff, the keyboard, the shapes on the guitar neck — and the sound.
- Harmonic field
The chords a key is built from, degree by degree, with the function of each one and the sound of all of them.
- Circle of fifths
Every key arranged by the fifth that separates them, with its key signature, its relative minor and its neighbours.
- Transposer
A chart moved to another key, with the spelling that key actually uses rather than the nearest black note.
- Temperament comparator
The same note in different tunings, in cents and in sound: what equal temperament costs and what it buys.
- Progression analyser
A sequence of chord symbols read in a key: degree, function, and what each chord is doing there.
