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Jazz

Jazz band
Image caption,
Jazz band

Jazz emerged as a new style of music in the early twentieth century in the African American communities of New Orleans. Jazz has its origins in blues and ragtime.

Jazz features lots of improvisation, which requires musicians to:

  • creatively explore and experiment with sound
  • express themselves
  • listening carefully to themselves and the people they make music with
  • respond to the improvisation of people they are playing with

All of this is done spontaneously, with musicians having to react in real time to what is going on around them.

Syncopation is a common feature in the rhythm. This is where emphasis is put on rhythms that are off the beat.

Sheet music with green arrows showing examples of syncopation
Figure caption,
The green arrows indicate where syncopation places emphasis on the off beat

There are many different styles of jazz, eg:

  • trad, New Orleans or Dixieland jazz - style originating from music played in New Orleans in the early 20th Century
  • bebop - style from the 1940s featuring fast , complex harmonies and lots of improvisation
  • cool jazz - a more laid back style from the late 1940s
  • Latin jazz - jazz featuring rhythms from Latin American music
  • jazz fusion - style from the late 1960s that mixes jazz with blues, funk, rock and other styles

The original New Orleans trad jazz style would have typical instrumentation of:

  • trumpet or cornet
  • trombone
  • clarinet
  • banjo
  • double bass or tuba
  • drum kit

The texture in New Orleans, or Dixieland, jazz was very and contained lots of improvisation. This means that there were lots of parts weaving in and out of each other.

Trombone glissando - sliding between notes - was a feature in this style of jazz and was known as ‘tailgate trombone’.

When the Saints Go Marching In performed by Louis Armstrong

Blues notes

Some notes used in jazz music may be flattened by a semitone. These are normally the third, fifth or seventh notes of the scale.

Musicians playing jazz sometimes use pentatonic scales and blues scales to play improvisations.

The blues in C. Low C, E flat, F, G flat, G natural, B flat, C.
Figure caption,
Blues scale in the key of C

Jazz music can be played by lots of different types of instruments and by different sizes of band. A twenty-piece big band is made up of trumpets, trombones, saxophones, rhythm section and sometimes a vocalist. A jazz trio often contains a piano or other instrument to play the melody, with double bass and drums providing the rhythm.