Jazz Fusion is genre of music that combines jazz influences with rock, funk, and R&B. This unique style was developed in the 1960s when jazz music was losing its popularity and rock music had become the most popular genre in America. Jazz fusion is noted to have its origins from jazz musicians who grew up listening to rock and roll. Musicians such as Herbie Hancock were pioneers during the genre’s popularity in the 1970’s. These jazz musicians began to use instruments that were popular in rock music. From there, a range of different arrangements varying in complexity formed. Because of this, some musicians consider Jazz fusion to be one of the hardest genres to perform. This genre of music proves its versatility by its more modern influence on rock and heavy metal.