You need to find steady in your life. Do you work regular hours? If You do get some melatonin and valeria root tea. You will slowly get back to normal patterns. My friend had to take anti-psychotic drugs to sleep and I told him about this combination and he stopped the pills and has not looked back.

As far as songs in your head, try tinnitus like I have. Nothing but shrill loud pitch always there but worse when going to sleep or late at night. I will never know true silence ever again, bummer huh?