Jazz is a genre of music that originated in New Orleans by African Americans in the 1900s. Jazz is a combination of swing, blue notes, chords, response vocals, polyrhythms and improvisation. Jazz has roots in West African cultural and musical expression. There are multiple forms of Jazz such as Cool, Modal, Rock, Smooth, and Gypsy. Jazz can be describe as a mood and way to sooth the soul with a sound that is solely built upon sounds from instruments. This genre of music can be used to include qualities of such as swing, improvising, and group collaboration. Studies have shown that listen to Jazz can actually effect certain brain waves that we produce that promotes stimulation or relaxation. The hypothalamus is also related with passionate activity. It makes you exultant in a way that reduces your heart rate.