Elements of truth in much of this. Choose with care. In most cases, my guess is that the music hasn’t changed. Your perception has.
it is true you are right that our perception of music can modify his effect...
But if you confuse bias with the physical properties of each music whose effects can be "measured" by cymatics for example or statistical studies on the body zones of different music , you miss all the knowledge about music therapy...
Music can change our perception, refine them elevate them or the opposite...
This is not reducible to subjective biases or placebo...
Bodily maps of musical sensations across cultures
https://www.pnas.org/doi/10.1073/pnas.2308859121