ACM - Computers in Entertainment

Visual hierarchical key analysis

By Craig Stuart Sapp
Theoretical and Practical Computer Applications in Entertainment, [Vol. 3, No. 4]

DOI: 10.1145/1095534.1095544

Tonal music is often conceived of as progressing through a sequence of key regions, usually starting and ending in the tonic key, with a journey away from the tonic key somewhere in the middle of the piece. This article presents a visual method of displaying the musical key structure of a composition in a single picture. The hierarchical plots can also show the relative strength of these key regions and how they develop out of the chordal substrate of the music.

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