Which is true about the swing music?

* Swing music has roots in jazz.

* It developed in the United States in the 1920s and 1930s.

* Swing music is known for its upbeat tempo, complex syncopated rhythms and improvisations.

* Swing dancing has its origins in Lindy Hop.

* Duke Ellington, Benny Goodman, Artie Shaw, and Count Basie are some of the notable swing musicians and bandleaders.