Jazz is a music genre that originated in the early 20th century in the African American communities of New Orleans. It is characterized by its use of improvisation, swing rhythms, and a blend of different musical influences, including blues and ragtime. Instruments commonly used in jazz include the saxophone, trumpet, and piano. Hip-hop emerged in the 1970s in the Bronx, New York City, and encompasses a range of cultural elements, including music, dance, and art. The genre is defined by its rhythmic vocal style known as rapping, along with DJing and beat-making. Hip-hop often addresses social issues and personal experiences, making it a powerful form of expression.