googlekopf

Hello community, everybody I know has from time to time a musical loop in their imagination (earworm). Our brain must have the abillity to memorize music as it was heard and then replay it. Nobody has learned this ability by conscious but for some reason I have lost this abillity. Some years ago I could imagine music just from my mind but now I can't even imagine the sound of an specific instrument. I tryed to get an earworm again so I heard one song over and over for three days. My brain should memorize the music and I should be able to recall the sounds but it does not work. When I have stoped hearing the song I was able to recall some fragments for about 5 minutes. After a longer time period I've just forgotten everything what I have heard before but when I heard it again I was remembering every detail again. So my brain does save the musical information but I have no access to recall it. The only sound I can imagine is my own voice when I am thinking or reading. One interesting fact is that I can imagine music very good seconds before I go to sleep (maybe thats because of the changing brainwave activity). My questions are 1) What could be the reason I Iost this ability? 2) How do I relearn this ability? (as a musician its really important to me..) 3) Could a doctor help me?