Disco is a genre of dance music that originated in the 1970s and is characterized by a repetitive four-on-the-floor beat. SOUL is a genre of popular music that originated in the United States in the 1950s and is characterized by its use of gospel and rhythm and blues influences. RAP is a genre of popular music that originated in the United States in the 1980s and is characterized by its use of rhyming lyrics and spoken word. ROCK is a genre of popular music that originated in the United States in the 1950s and is characterized by its use of electric guitars, drums, and bass. CAW is a genre of popular music that originated in the Caribbean in the 1960s and is characterized by its use of calypso and soca rhythms. POP is a genre of popular music that originated in the United States in the 1950s and is characterized by its use of catchy melodies and simple chord progressions. SWING is a genre of popular music that originated in the United States in the 1930s and is characterized by its use of big band instrumentation and SWING rhythms.