If your students are already working toward a mature, clear, well-supported, focused and energized tone, teaching them to achieve a desired vocal jazz sound will be easy. They'll be on their way to using a vocal quality that is more appropriate to a jazz style. Each jazz choir rehearsal should also consist of listening time and improvisation time. Improvisation is one of the most important characteristics of jazz. In the study of improvisation, students will learn musical forms and harmonies, in addition to developing creativity.
Ear training is fundamental to successful jazz improvisation.
A vocalist must be able to hear chord changes in order to build a scat solo over them. Improvisation and jazz interpretation require strong powers of attention and concentration. I incorporate syncopated rhythms, articulations, and inflections that are characteristic of this style. I then have each student lead an improvised call and response. Eventually, we progress to a 12 bar solo.