Video demo here, here, here, here, here and here.

A general Geometry Nodes setup, which offers mesh conforming particle movement to any mesh. The noise distributed, point based Geometry Nodes "particle system" is constrained to a custom mesh with (for example) audio value driven rotation. The files come in two variation (a Cube and a Sphere) as an example of different meshes.

The setup with additional curl noise-controlled movement away from the surfaces is available under the name "Surface Swirl Flow".

There are multiple variations of the setup 1. Cube 2. Sphere 3. StretchSphere 4. Speaker

Happy Blending !

NOTE 

(Since it is a concept demonstration, it is kept as simple as possible.) The GeoNodes trees are kept clean, the nodes are not contracted into nodegroups for easier readability and have detailed explanations.)

The file is optimized for and rendered in Eevee (Render Viewport animation). Of course, you can set up any renderer you wish.

-Follow the instructions in the description to change the setup and fine tune it to your audio ! (You need to bake it to an Fcurve, fine tune it trough the Map Range nodes, and add keyframes to the material to control the emission glow and colors as you wish)

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NOTE

-(Since it is a concept demonstration, it is kept as simple as possible.) The GeoNodes trees are kept clean for easier readability and have detailed explanations. Everything is built from the base. The point of these setups is to provide a base core of the concept, node from node, instead of contracting all into node groups with exposed settings, which makes everything harder to read and dissect.

You can embellish, refine as you wish based on the core or realize your own ideas.

-Read the text description, it has a lot of useful info !