- composed of 4 - 6 saxophone players
- usually divided into 2 alto saxophones, 2 tenor saxophones, and a baritone saxophone
2. Trumpet section
- composed of 4 - 5 trumpet players
- usually divided into 1 lead trumpet, 3 mid-range trumpets, and a 4th trumpet for low notes
3. Trombone section
- composed of 4 - 5 trombone players
- usually divided into 2 tenor trombones, 1 bass trombone, and 1 valve trombone
4. Rhythm section
- composed of piano, bass, drum kit and guitar
- responsible for providing the rhythmic accompaniment to the other sections