The title translates to "Jazz Guitar: Harmonic Technique." This is not just a songbook; it is a technical manual designed to teach the "vocabulary" of jazz guitar.
Key concepts typically covered in this method include: The title translates to "Jazz Guitar: Harmonic Technique
Based on the structure of Tecnica Armonica and common numbering in Italian jazz guitar pedagogy, Exercise 15 of the harmonic section probably focuses on: The title translates to "Jazz Guitar: Harmonic Technique
In search queries like this, the number "15" usually refers to one of two things: The title translates to "Jazz Guitar: Harmonic Technique