The 20 & 20 Series comprises several volumes that include 20 lessons and 20 exercises, referring to different aspects of music science...
In 2008 Néstor Crespo begins to make workbooks for his students in his private classes with a concrete and practical way of studying...
We invite you to take a quick tour of all the books published by the Serie 20&20.
Guitar /Seventh Chords 1
Guitar / Melodic Triads
Guitar / Scales & Arpeggios
Guitar / Sight Reading 1
Bass / Scales & Arpeggios
Guitar / Harmonic Triads
Guitar / Spread Triads 1
Theory / Superimposition of Triads 1
Guitar / Diatonic Major Scale
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