few suggestions (sointu, cli-visualiser, pwvucontrol)
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sointu -- cross-architecture and cross-platform modular software synthesizer for small intros, forked from 4klang URL: https://github.com/vsariola/sointu
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cli-visualizer -- console alsa/pipewire spectrum visualizer URL: https://github.com/dpayne/cli-visualizer RFP: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1051152
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pwvucontrol -- pipewire volume control URL: https://github.com/saivert/pwvucontrol
Best, Patrice