tonal-progression 
tonal-progression is a collection of functions to create, manipulate and analyse chord progressions.
This is part of tonal music theory library.
You can install via npm: npm i --save tonal-progression
tonal-progression is a collection of functions to create, manipulate and analyse chord progressions.
This is part of tonal music theory library.
You can install via npm: npm i --save tonal-progression