Is there a way to group multiple layers into one movable object or layer? I have 3 layers each with a different audio spectrum on it and I want to group them together so I don't have to Duplicate 12 layers.
Precompose them. Precomps in AE are one of the multitude of things you can learn from the pros by spending quality time here:
Getting started with After Effects (CS4, CS5, CS5.5, CS6, & CC)
Retrieving data ...