The plain form of a Key: the key/scale, the spelled tonic that
anchors its letter names, and the scale form it stands in.
The same shape the theory layer resolves a key to, so a key crossing between
the two carries the same three facts under the same names, and a project file
holds what every layer reads.
The plain form of a Key: the key/scale, the spelled tonic that anchors its letter names, and the scale form it stands in.
The same shape the theory layer resolves a key to, so a key crossing between the two carries the same three facts under the same names, and a project file holds what every layer reads.