It's from the youtube video you've posted. It shows the how the spectrum (10 Hz to 20 kHz, dark blue = low level, yellow = high level) varies over time. On the left you see the projection over all spectra, on top the projection over all amplitude levels.Thanks. Is that from the original CD or the youtube file? Also, what's it telling you in particular?
One sees that the lowest bass line is around 30 Hz, with 2nd to 4th harmonics visible.