According to the New England Folk Network Web site, Massachusetts hosts more than a dozen annual folk music festivals. Of these, the Lowell Folk Festival claims to be the biggest free folk festival in the United States, while the New England Folk Festival, which began in 1944, may be the longest-running festival in the state. Festivals may include folk music from a wide diversity of cultures. For example, the 2007 New England Folk Festival included Bulgarian, Japanese, and Swedish music, and the 2007 Working Waterfront Festival included Portuguese fado music and Mexican norteño.