The Working Clarinetist by Peter Hadcock edited by Bruce Ronkin, Aline Benoit and Marshall Burlingame. Roncorp Publications, 1999. SB, 212 pages. Subtitled Master Classes with Peter Hadcock. Hadcock, the late Assistant Principal and E-flat Clarinetist of the Boston Symphony Orchestra, describes this book as an attempt to put on paper what he learned during his forty-three years of playing the clarinet. The book is divided into four parts. The first part which represents three quarters of the book is annotated orchestral excerpts many of which are part of the standard audition repertoire. Part 2 covers many technical aspects of clarinet playing such as embouchure, articulation, intonation etc. Part 3 are master classes on Mozart's and Nielsen's clarinet concertos. The final section has trill and tremolo fingerings.