I tend to break out in song quite a bit. Mostly because I want my life to be a musical [more a South Pacific-type musical, not so much a Les Miserable-type musical], and sometimes because it's an easy way for me to stop myself from thinking aggravating, stressy thoughts. A lot of times because of that.
I also tend to sing in the shower, because I adore a cliche. I do this in the morning, quite loudly. I asked the husband the other day if he could hear me singing, and he said, "I hear that you're singing. I don't hear the words."
So now I sing songs that are about him. Just for funsies.