The root pitch class is the degree's diatonic pitch class in key; the
quality's interval template is attached unchanged. Degrees beyond the scale
length wrap around, so degree 8 of a heptatonic scale is its degree 1.
Parameters
degree: number
1-based scale degree of the chord root: 1 is the tonic.
Build a chord rooted on a diatonic scale degree.
The root pitch class is the degree's diatonic pitch class in
key; the quality's interval template is attached unchanged. Degrees beyond the scale length wrap around, so degree 8 of a heptatonic scale is its degree 1.