This document provides an overview of the origins and development of jazz music. It discusses how jazz evolved from earlier musical genres developed by enslaved Africans in the US such as work songs, spirituals, and blues. Key influences and innovators in New Orleans like Jelly Roll Morton and Charles Buddy Bolden helped develop early styles like ragtime that blended African and European influences. Jazz then spread nationwide in the 1920s led by influential African American artists. The document identifies seven distinguishing characteristics of jazz including improvisation, syncopation, blue notes, and swing.