I had an experience where for a couple weeks I could playback symphonic music in my head and be able to control the loudness of individual sections, repeat pass

I had an experience where for a couple weeks I could playback symphonic music in my head and be able to control the loudness of individual sections, repeat passages, etc. with the same fidelity as a lived experience. I knew it was meme-erex but it sounded live. It was a transformative experience and it gave me a small glimpse of what it would be like to have another order of magnitude of brain capability. The brain can be a wonderful place. How much of you seeing your friend transcribe music with such ease, enabled you to achieve the same thing? I was thinking the other day about people being "first" at something and how once that happens, hundreds of others follow, almost as if they needed permission by the person being first. When know something is possible, that often removes the biggest barrier for doing a thing.