The piece of audio visualisation artwork traced and responded to a piece of disappearing music/song in Hong Kong recently, due to its relation with the 2019 protest. It was a month long exercise (14 June – 13 July 2023) to create visualisations of the music using the various strategies in TouchDesigner, every day before the music disappears in the public domain, after the final court verdict.
Unlike musical notations, audio visualisation is an irreversible process. It is quite impossible to recover the original music/song given a few visualisations of the same piece. Nevertheless, the variation in loudness, pitch and perhaps timbre can be visible.
Here is the complete YouTube playlist and the source files in the GitHub repository.
Here are the screenshots all the animations in a month.
