The School for Trombone in Clefs (the "Blazhevich Clef Studies") first appeared in 1925. A later edition appeared in 1939, which represented the full maturation of the composer's ideas. Today's new original authentic edition is based on that final1939 Russian publication. It corrects errors and omissions found in previous American editions which had been based on the 1925 version. It also removes all non authentic editorial content such as dynamics, articulations and tempo indications that had been added along the way. The original Forward by Blazhevich has been restored, with some additional advice provided by the editors (clearly marked as such) to bring the language into the 21st century. Thus, in this edition, the music and text are returned to their authentic state, exactly as Blazhevich intended. As an added feature, each section of the book and many of the individual studies have been annotated by Ward Stare, former principal trombonist of the Lyric Opera of Chicago. These are clearly indicated and are intended to act as performance advice, rather than definite instruction. 105 pages. Spiral bound.