Benefit concerts are a major example of celebrity charity for they involve popular musicians; actors and actresses; and other kinds of entertainment figures volunteering to a greater cause. The efficiency of celebrity charity is explained by the theory of Catalytic Philanthropy designed by Paul Schervish. His thesis explains that it is more beneficial to a cause that celebrities do not contribute by only donating their money, but by participating in event like benefit concerts. That way stars can inspire hundreds of thousands of others to give.