Jazz originated in the late 19th century as a mix of European and African rhythms and styles that developed in the Southern United States. It is characterized by improvisation, unique rhythms, and drive. Some major trends in jazz history include Dixieland jazz in the early 20th century, Northeastern "strait" jazz featuring Louis Armstrong, Midwestern boogie-woogie piano styles, big band swing in the 1930s led by Benny Goodman, cool jazz in the 1940s-50s pioneered by Lester Young and Miles Davis, progressive and free jazz in the 1950s led by Miles Davis and Ornette Coleman, jazz fusion emerging in the 1960s that blended jazz with rock and