For this animation I used an "Evaluate Sound"-Node to animate boxes placed on a circle
you can download the blend file here
First I use a "Sound Banke"- and a "Evaluate Sound"-Node to to create the input for the sound visualizer, very similar to what the "Sound Equilizer"-Template does. I create a bunch 64 copies of a cube using a Object Instancer. The "Animate Float" Node is here to make the blocks dissapear at the end of the animation
In the loop I used some matrix transformations to place the boxes on a circle. This part of my node setup is responsible for adding a little bit of rotation to each of the boxes in the loop.
To create the "Reasign Loop Parameter"-Node select the "Loop Input" node and use the "n" key to open the node settings. Add a new output of type matrix
Then open the "Advanced Node Settings" Tab and in the "Parameter Sockets" box click on the "Reassign" Button.
To create the sound animation I used the input of the "Evaluate Sound" node and created a translation and a scale matrix.
Finally the various matrices combined into a list and get applied to the boxes.
Animation Node experiment - icosphere grow
Animation Node experiment - particle cluster II
Animation Node experiment - delayed animation
Animation Node experiment - Music nodes