It is often said that music is a universal language that unites people across cultures. I agree with this statement to a large degree, although I think its power to unite has limits.
The strongest argument in its favour is that music does not require translation. A listener in Brazil can feel the sadness of a Russian folk song or the energy of an African drum rhythm without understanding a single word, because rhythm and melody communicate emotion directly. Music festivals and concerts also bring together audiences from many nationalities who share the same excitement. The Eurovision Song Contest, for instance, attracts viewers across dozens of countries, and international orchestras made up of musicians from different backgrounds play together effortlessly. Shared emotions of joy, grief or celebration create a bond that conversation alone cannot achieve.
However, it would be an exaggeration to claim that music is understood in the same way everywhere. Musical tastes differ strongly between cultures, and a style that is loved in one region may sound strange or unpleasant in another. The scales and instruments used in traditional Chinese music, for example, are very different from those of Western classical music. Lyrics can also divide people, since songs may carry political messages or national symbols that offend some listeners. Finally, although music can create goodwill, it cannot by itself solve conflicts that have economic or political causes. A concert will not end a war.
In conclusion, music is a powerful way of connecting people because it expresses emotion without words and brings people together at shared events. Nevertheless, differences in taste and the limits of its influence mean that it can support, but not replace, other efforts to build understanding between cultures.