Soundstream is a screensaver for Mac OS X that responds to sound input.

Its colorful Flurry-like streams pulse to the beat of music or bloom with ambient noise.

Unfortunately, as of macOS Mojave, Apple dropped support for
Quartz Composer screensavers like Soundstream.

Soundstream only works on Mac OS X 10.4.4 to 10.13.

Download Soundstream 1.5