Base with my personal experience. I agree that music can change a particular mood. For example, whenever I fell sad. I would listen to a funky or pop music and my mood starts to go back to normal then a happy mood as I observe it. I also notice my colleague doing this when she is finishing a presentation. She would play classic music while doing doing her work at the same time. One time I asked her why she likes listening to classic music every time she do her works. Then she replied "It relaxes my mind and it's giving me more focus to do my work". These examples simply testifies that music have powerful sound elements to change a person's mood.