Designed for all rhythm section players and teachers. Listen to this set as you wouldto any straight ahead jazz quartet recording as they play the melody in and out, solo, comp.,and trade "4's". Then,using the special stereo separation, remove the instrument of your choice and "sit in". Tremendous for teachers as it allows isolation and careful study of each instrument's role as well as definitive chapters by Jamey Aebersold and the musicians on the recording.