I sometimes hear music in my head, I can't tell what the song is...if it is indeed a song. It seems to happen more towards late evening, and in the night. I am awake while this is happening. I do not wake up and hear it....it is when I am awake. It is definitely some kind of music and has been happening for almost a year now....any thoughts as to what this may be? and I do have BiPolar 2 ..I saw something about BiPolar possibly having something to do with it......I have had BiPolar for many years. I was diagnosed around 10 years ago....this has only started in the last year. I hope I have given enough information. Please can you tell me what this is?