Frank Erickson has taken a unique approach in this extremely functional book. Each of the eight units comprising the book is in a different key and contains a chorale arrangement, scale studies, arpeggios, interval studies, articulation practice, rhythm studies, a speed drill, and a work in the relative minor key. But the exercises themselves are different from unit to unit, which means that your students have the opportunity to work on the same kinds of technical demands in different ways, instead of simply repeating previously learned exercises in different keys. Major keys covered (along with their relative minors) are Bb, F, C, Eb, G, Ab, Db and D. The helpful appendix contains basic scales in the additional keys of Gb, A, E and Bb Major, as well as special lip slurs for brass, basic chord structures, and rhythms with rests in mixed meters. A very intelligently conceived study book that is certain to make better players of your students!