Can music really effect a personals mental state?

Recently I began to look back at the past 20 years of my life and began to notice something. I have always been very passionate about music and I have known it had some impact/effect on me but was not sure to what extent. I've listened to everything from Gangsta Rap to Hard Core to Heavy Metal to Death Metal to Classical. I typically would listen to different musics when in a different mood or for a different purpose. For instance, Country music when I'm camping. Then I made a realization several times in the past; if I was in a good mood and happy and started listening to Korn or Marilyn Manson I would began to take on the feeling of the music, subconsciously. I noticed that this was evident and at times would spiral out of control to the point that my mood would began to reflect the music I was listening to even if I had no reason to feel that way. To this day I can turn on "happy" or "positive" music such as Presidents of the USA and will notice my mood and affect start to change. What does everyone else think of this??? Not necessarily in me, I'm more or less asking about your own personal perception of your experiences with music and the effect it has had on you!