Add visualization with Scriabin Circle colors based on keys

[barbeau]

Is your feature request related to a problem? Please describe.
A visualization of music would be nice, perhaps with colors based on the key of the musical piece.

Please see if there is a way to using these colors in a visualization (or even just background color), given the key of a classical piece (which can be obtained from the title/name or through a query).

We'd need to figure out how to determine key of a piece.

Describe the solution you'd like
A Scriabian Circle is one way to map chords to colors:

A couple of possibilities for visualizations:

1. Some basic frequency bar moving with the music and the bar in the target color of the piece. https://www.youtube.com/watch?v=W21ZcpyFRZ8
2. https://www.youtube.com/watch?v=gZjdAWgjLx8