Advanced. As the lid of Pandora's Box is lifted all the ills which plague the trombonist fly out. Will they defeat us or can we turn them to our good advantage? Only by being aware of these techniques, and combining them with our study and practice of conventional music, can we make a personal answer to this question. This piece is in effect a statement of the technical potential of the trombone. As such it can be used as a circular warm-up, a checklist of techniques for the player to study, or as the ground plan for a performance. either solo, duo or ensemble. John Kenny