Music Visualizer is an add-on that generates audio spectrum data within Blender using Geometry Nodes. Users can select audio or video files, and the tool dynamically extracts the sound frequencies to drive 3D animations. It provides a dedicated Geometry Node group to grant direct access to the generated spectrum data, which defaults to manipulating the Z-axis location of geometry.

The tool features built-in sequence settings directly within the 3D viewport sidebar, allowing users to sync the timeline to specific tracks and manage audio clips without opening the Video Sequencer. It also supports live microphone input to drive visualization data in real time and includes a basic preset visualizer to serve as a starting point for custom setups.