Using VS with acoustic instruments

While I don’t have any examples at hand currently, there is this older thread by Dichotomos, who was going through a similar process.

It all comes down to using devices like the Envelope Follower (you can find it in the Audio Effects category), and mapping it to interesting visual parameters. I would recommend looking for one or more interesting shaders, loading them into ISFLoader devices, and then create meaningful interactions between audio and video.