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Swing music reflects a technique where, instead of playing all of the notes in equal length, the notes would have a long-short long-short feel. It was so popularized by Louis Armstrong in the 1920s that the following decade was named after it.
In the United States, swing jazz first appeared in the late 1920s and early 1930s. From the middle of the 1930s, it gained a lot of popularity. Its name was derived from its emphasis on the off-beat, or seemingly weaker beat. Typical swing band soloists would improvise on the melody over the written composition. Large orchestras and bandleaders like Benny Goodman dominated American popular music throughout the swing era, which is frequently referred to as the years 1935 to 1946.
The 1920s dance music groups that used unique written arrangements and incorporated rhythmic innovations created by jazz performers like Louis Armstrong, Coleman Hawkins, Benny Carter, and others was where swing had its start.
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