ACCIDENTALS HAPPEN is a diverse scale book which includes scales from classical, jazz, blues and a variety of world music traditions. In this book are 26 scales notated in all 15 key signatures. The scales in this book are: Major, Harmonic & Melodic Minor, Dorian, Phrygian, Lydian, Mixolydian (Dominant 7th), Aeolian (Natural Minor) & Locrian Modes, Major & Minor Pentatonic Scales, Spanish/Jewish, Hungarian Minor, Arabic, Hindu, Augmented, Lydian Augmented, Major & Minor Diminished, Whole Tone & Diminished Whole Tone, Harmonic Major, Blues, Bebop, Lydian Dominant & Chromatic scales. All scales in this book are notated in ONE OCTAVE. It includes reference material on 25 scales, the "Circle of Fifths," key signatures & enharmonic equivalents. Half steps are shown in all scales where applicable. It is designed for classically-trained double bassists and bassists who have not yet gone past first position or do not intend to. Great for group teachers of younger students who need all scales in the book standardized to one octave. A great initial preparation for improvisation. Also great for learning basic lower-position fingerboard geography with notation on a 4-string electric bass.