This is a great book for bringing focus into every rehearsal. I use it every day with my high school concert band. It has helped each individual play with more confidence by not always having to rely on stronger players. It has helped them listen to each other and really think for themselves. It offers concrete ideas for improving dynamics, rhythm, intonation, tone quality, blend, articulation, and scales using endless creative methods that can be applied to specific pieces we are working on. The students learn to listen to each other and play as a group. This is the most useful book I have ever read on this topic. It is an excellent book I highly recommend to every conductor.