Really?But I know what I heard.
I have distinctly heard my child crying in the night. Even though they are all grown up and out on their own.
I can also hear songs playing clearly but then I have a really good memory.
Sound is nothing more than impulses in your brain. Its like tasting a banana without actually eating it. How about a candy bar? The brain is still a mysterious thing. Senses can be pulled from memory in great detail, even when you are not even trying.