Calypso music
The first major stars of calypso started crossing over to new audiences worldwide in the late 1930s. Attila the Hun, Roaring Lion and Lord Invader were first, followed by Lord Kitchener, one of the longest-lasting calypso stars in history—he continued to release hit records until his death in 2000. 1944's "Rum and Coca-Cola" by the Andrews Sisters, a cover version of a Lord Invader song, became an American hit despite the song being a very critical commentary on the explosion of prostitution, inflation and other negative influences accompanying the American military bases in Trinidad at the time. Perhaps the most straightforward way to describe the focus of calypso is that it articulated itself as a form of protest against the authoritarian colonial culture which existed at the time.
Monica Boyar
During the 1939 New York World's Fair she made a concerted effort to persuade Americans to adopt the Dominican Republic's native dance, the merengue. An initial reluctance eventually subsided, and by 1955 it was the fastest growing dance in the U.S. When Boyar introduced calypso songs to America, many felt the music was not commercial. By 1954 calypso songs were among the bestsellers.