Information is energy in a multitude of forms. We know of only a very small fraction of it. Waves – sound – matter.
But imagine that these waves of informational energy exist in frequencies we have yet to even have a vocabulary for, like ultra-dimensionally. Where we are in our band/frequency predicates what we can perceive. We can’t detect but can only suppose the existence of multiple dimensions, I propose the wave spectrums of other dimensions exist also.
I think that each field adds up and that at one level, we have the intelligence of the atom, then the mineral intelligence, then animal intelligence,
(Musical composer Jim Wilson took the chirping song of crickets and slowed it way down, and the result is truly fantastic)at around 50 seconds in is an explanation.
then the planetary intelligences and the solar intelligence and the solar system intelligence and the solar system groups intelligence and the galactic intelligences.
Each of the conglomerates would have a frequency of its own.
Each human body, if we were to capture its frequency and translate it to something we could hear would have a ‘note’ a signature that was uniquely its own, as does the earth, the Schumann resonance. 
And all of the planets have their own.
So it doesn’t surprise me that the Rosetta comet has its own note that is sings as it merrily makes its way through space.
http://artbell.com/comets-eerie-song-captured-rosetta-spacecraft/
I think ( my personal opinion) we are hearing an intelligence that is mostly happy. It sounds to me like the analogy of the songs we hum or tunes we whistle while we work. A melody of contented happiness.
The speculation in the sandbox about it all last night on Fader Night was a lot of fun. Thank you all.
In the Mind's Eye 