Two pattern of sounds act as in steganography the superposition of two geometrical colored patterns and then can initiate a veiled or hidden third one image...
The impact of Bach music is especially clear by his use of superposed melodic lines...Counterpoint is steganographical...
We perceive what we had learn to perceive relatively to our own innate biases but also with our own sound deciphering learned history by what Goethe called " exact sensorial imagination".
Some level of synesthesia may be also implicated to some point... I myself hear music as geometrical flow in my "sensorial imagination" ...
Dr. Margulis is right... Thanks for the recommendation...
https://twitter.com/DenisLabelleX/status/1757510366639038928
As i said here often we must LEARN how to hear and listen all our life...
This is also why acoustic is so deeply educative...
Music is by his content interpretation an education of attention duration , focus and span ... Also music contain cultural consciousness level information which cannot be reach otherwise...
Most significantly Prof Elizabeth Margulis of Princeton states that prior knowledge in the brain actually changes what we perceive when listening to music.