Woodwind parts are written on the first and second treble clef staves in a big band chart. Woodwind parts can include parts for clarinet, flute and piccolo. These parts are usually written as main melody lines or in the case of clarinet, harmonic accompaniment for the main melodies.
Brass parts can also be written on the first or second treble clef staves in a big band chart. Brass parts include trumpet, trombones and tubas. These instruments usually have the main melodies of the tune written into their parts as well as 'call and response' type sections where the brass line will perform a particular melodic motif and another instrument group will answer back with their melodic phrase.
Piano parts are written on the third line of the treble clef staff in a big band chart. Piano accompainment consists of a rhythmic jazz technique called "comping," where the piano provides rhythmic chord accompainment to the rest of the band.
Rhythm section parts are notated in the bottom staves of a swing music chart. In this case, guitar, bass and drums are defined as the rhythm section. Particular chords and melodic riffs are notated, along with rhythmic grooves in the case of the drums.