As a kid (I'm now a Millennial adult for context), I used to mess around on Paint, play Microsoft 3D Pinball, and watch visualizers bounce along to the music I played on Windows Media Player.

You can choose to display command keys, all modified keys, or all keystrokes, and there is also an option to include mouse clicks. It is also possible to develop your own visualizer on top of KeyCastr ...

Sonic Visualiser is a free, open source, cross-platform desktop application for music audio visualisation, annotation, and analysis. If you are using Sonic Visualiser in research work for publication, ...