Bass Clarinet Scale Book by Martin Arnold. Aztecpress, Second Edition 2003/2015, SB, 78 pages. This book was originally developed to assist those with a bass clarinet to low C gain proficiency in the extended range and in bass clef. The second edition, more than double in length, includes all of the original material and adds scales in treble clef for both low C and low E-flat instruments. It contains scales and chords of various types in all keys. It also includes technique exercises to develop fluency in the extended range. This is the revised version of the second edition which now has text in English, German, French, Italian and Spanish