 The commercially oriented folk-music revival as it existed in coffee houses, concert halls, radio, and TV was predominantly an English-language phenomenon, though many of the major pop-folk groups, such as the Kingston Trio, Peter, Paul and Mary, The Chad Mitchell Trio, The Limeliters, The Brothers Four, The Highwaymen, and others, featured songs in Spanish (often from Mexico), Polynesian languages, Russian, French, and other languages in their recordings and performances.These groups also sang many English-language songs of foreign origin.The British Invasion of the mid-1960s helped bring an end to the mainstream popularity of American folk music as a wave of British bands overwhelmed most of the American music scene, including folk.