I blast upbeat music in my car in the morning on the way to work with my windows down to put me in a good mood and hopefully put someone else in a good mood too.
Has this ever upset anyone? Why do you play your music loud?
I think this is actually a kind thing to do.
It is not a good idea to play your music loud in public where it could disturb others. Some people have sleeping children in the car and this could be a disturbance.
It's my preference cheer people up, and it doesn't hurt anyone.
If it's really early in the morning, you're probably disturbing more people with your music than cheering them up. It's nice of you to want to cheer people, but you might want to think of a quieter way to do it.