Guitar Music Theory Numbers & Intervals On the Fretboard
By Desi Serna
Guitarists play and use intervals for melody, harmony, riffs, lead guitar solos, and bass lines. Understanding how intervals are played on the fretboard is an important part of learning about 
guitar theory, understanding music and popular songs. This free guitar lesson will explain what intervals are, how they’re numbered, which intervals are commonly used, and what songs make good examples of using intervals such as thirds, fourths, fifths, sixths and sevenths. This music theory instruction is based on the book Fretboard Theory Chapter 9 Intervals by Desi Serna.
