Music is a universal concept found around the world. Every culture has its own forms and styles unique to it. A serious study in music includes exposure to music and instruments from many different cultures.
This diverse exposure helps to create an understanding and compassion for other cultures.
Music provides a bridge across cultural chasms that leads to respect of other races at an early age.
A person who is able to look at the world beyond themselves and embrace it in all its diversity will achieve greater things in life. According to the evidence here, music study can be beneficial to this sort of development.