African American music is one of the most pervasive African American cultural influences in the United States today and is among the most dominant in mainstream popular music. Hip hop, R&B, funk, rock and roll, soul, blues, and other contemporary American musical forms originated in Black communities and evolved from other Black forms of music, including blues, doo-wop, barbershop, ragtime, bluegrass, jazz, and gospel music. African American-derived musical forms have also influenced and been incorporated into virtually every other popular music genre in the world, including country and techno. African American genres are the most important ethnic vernacular tradition in America, as they have developed independent of African traditions from which they arise more so than any other immigrant groups, including Europeans; make up the broadest and longest lasting range of styles in America; and have, historically, been more influential, interculturally, geographically, and economically, than other American vernacular traditions. Dance African Americans have also had an important role in American dance. Bill T. Jones, a prominent modern choreographer and dancer, has included historical African American themes in his work, particularly in the piece "Last Supper at Uncle Tom's Cabin/The Promised Land". Likewise, Alvin Ailey's artistic work, including his "Revelations" based on his experience growing up as an African American in the South during the 1930s, has had a significant influence on modern dance. Another form of dance, Stepping, is an African American tradition whose performance and competition has been formalized through the traditionally Black fraternities and sororities at universities. Literature and academics Many African American authors have written stories, poems, and essays influenced by their experiences as African Americans. African American literature is a major genre in American literature. Famous examples include Langston Hughes, James Baldwin, Richard Wright, Zora Neale Hurston, Ralph Ellison, Nobel Prize winner Toni Morrison, and Maya Angelou. African American inventors have created many widely used devices in the world and have contributed to international innovation. Norbert Rillieux created the technique for converting sugar cane juice into white sugar crystals. Moreover, Rillieux left Louisiana in 1854 and went to France, where he spent ten years working with the Champollions deciphering Egyptian hieroglyphics from the Rosetta Stone. Most slave inventors were nameless, such as the slave owned by the Confederate President Jefferson Davis who designed the ship propeller used by the Confederate navy. By 1913, over 1,000 inventions were patented by Black Americans. Among the most notable inventors