Jazz encompasses many sub-genres and all periods from the early 20th century USA to the present day world-wide. The Ragtime, New Orleans Dixieland, Big Band, Swing and Bebop of the pre-1950s gave birth to British and Australian Trad Jazz, and also to Latin-Jazz, Afro-Cuban and Brazilian jazz in 50s and 60s. Then came jazz-rock and later acid-jazz. But It Don't Mean A Thing If It Ain't Got That Swing.