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.
Music of Hawaii
In the early 20th century Hawaiians began touring the United States, often in small bands. A Broadway show called "Bird of Paradise" introduced Hawaiian music to many Americans in 1912 and the Panama–Pacific International Exposition in San Francisco followed in 1915; one year later, Hawaiian music sold more recordings than any other style in the country. The increasing popularization of Hawaiian music influenced blues and country musicians; this connection can still be heard in modern country. In reverse, musicians like Bennie Nawahi began incorporating jazz into his steel guitar, ukulele and mandolin music, while the Kalama Quartet introduced a style of group falsetto singing. The musician Sol Hoʻopiʻi arose during this time, playing both Hawaiian music and jazz, Western swing and country, and developing the pedal steel guitar; his recordings helped establish the Nashville sound of popular country music. Lani McIntyre was another musician who infused a Hawaiian guitar sound into mainstream American popular music through his recordings with Jimmie Rodgers and Bing Crosby.