Activity jazz, blues, and rock and roll are a few examples of music genres that developed in the united states. you will be considering the history and diversity of music genres that formed in the united states as you compare those genres to your own musical interests. part a alan lomax is a famed ethnomusicologist, a person who studies the cultural and historical significance of a song or music genre. for his work, he traveled to different parts of the world to record and archive traditional music. listen to recordings lomax made in the us south, the caribbean, and britain, ireland, and scotland. while some of this music originated outside the united states, it all comes from cultures that have influenced us music.