It’s a hobby, you could say… Picking music based on what sounds good.

I would like to hear someone's opinion... :) I need to understand if it's just bad or very bad.

That's a great hobby! Just record it directly, through the linear output, so that there are no noises at all.
And can you play music from Heroes 1 (Barbarian Castle), adding extra effects of your choice?

Best regards, VDV_forever