Thank you very much for the feedback and support.
It was necessary to modify the music in the original version of the game I used some buggy instruments that generated clipping and distortion. I don't know why I thought it was ok to release the game with that bad audio quality. I have used new instruments and improved the audio mixing to enhance the quality.
In regards to environments, I'm quite satisfied with the result. I have improved the quality and detail in them. Of course it can be improved further, but it's a matter of time and resources. In the original game I already tried to achieve realism, but it was just that I didn't have the skills. Environments are still being worked on, so they are subject to change.