Spectrogram: the song as rings

A Spectrogram fill draws the song's frequencies over time: rings for time, the circle for pitch.

Try this

  1. Press play with sound on. New sound starts at the center and moves outward.
  2. Click the plate and open Spectrogram. Span sets how much of the song it holds.
  3. On the Levels artboard, Per band and True mix show the same moment two ways.