Hi,
With all that lot I would sing in my sleep!
It is not unusual to talk in ones sleep. I had a lotof experience with shared dormitories; college, workplace, various camps, and heard many people talk. One boy in college always started talking 5 minutes after going to sleep. You would be surprised at the "tall stories he told"
When you sleep near the waking level of consciousness, the dreams are more vivid. However some medicines create "noise" in the brain and the dreams have to be more vivid and more violent to deliver their commands.