You raise some points which i may have neglected a bit. Allow me to elaborate a bit on the setting from which my experience came. This was in the later phases

You raise some points which i may have neglected a bit. Allow me to elaborate a bit on the setting from which my experience came. This was in the later phases of my whole hallucinatory "wonderland", and i spent my time pretty much solely within the realms of classical music (early spotify binges, time to kill, and a tendency to not be able to shut my brain down in the evening.) Now, the easiest way to describe it is probably to say that my dreamstates seeped over from my "dreaming" brain to my waking brain so that what should be relegated to the realm of dream became something i played with from an "i am awake and physically present and this is all in my mind, hopefully" (when i was in the thick of it the paranoia of the external sometimes asserted itself). So there are plenty of stories about people who find songs they've never heard in their dreams, or do stuff like that. What is interesting is that when you're awake, conscious, and interactive in your thinking and music manifests itself you (or at least i) end up with a very brittle construction that you need to keep a special kind of mental focus on for it to keep unfolding. This mental focus also affords at least the semblance of control over instruments and moods. So yes, once the "how does this make sense" part kicks in, you end up tuning your brain away from the music and the music stops, but with the right mental tricks you can Also, from my experience there was never any active input querying, this was more or less independently manifested from my brain based on the input (really quite excessive amounts of classical music/sensory depravation/scrambling of the daynight wakesleep cycle) that i had exposed it to. I hope that was reasonably focused and relevant.