Guitar in Fourth Gear Perfect Fourths Tuning Part 14 major triads first position

In this lesson on perfect fourths tuning, I break down major triads in first inversion, starting on the third instead of the root, across the entire fretboard using four repeatable shapes. Perfect fourths tuning reveals consistent interval patterns and octave pathways, eliminating CAGED-style breaks. This method helps experienced guitarists develop true fretboard awareness, hear chord tones clearly, and navigate harmony with confidence in real musical contexts.

TABLE OF CONTENTS:

00:00 – Introduction: Perfect Fourths Tuning, Part 14
00:10 – Series Goal: From CAGED Boxes to Interval Thinking
00:49 – What Is Perfect Fourths Tuning (E–A–D–G–C–F)
01:26 – Lesson Objective: Major Triads in First Inversion
01:54 – Overview of the Four First-Inversion Triad Shapes
02:46 – Interval Structure: Minor Third + Perfect Fourth
03:10 – Shape 1: 3–5–1 on Adjacent Strings
04:08 – The Four Triad Types (Major, Minor, Diminished, Augmented)
04:32 – Using Octaves to Extend Triads Across the Neck
05:19 – Comparing Root Position vs First Inversion Mapping
06:22 – Shape 1 Across Multiple Octaves
07:57 – Shape 2: Third on One String, Fifth + Root on the Next
09:14 – Thinking in Intervals Instead of Fret Numbers
10:24 – Shape 3: Third + Fifth on One String, Root on the Next
11:17 – Fast, Repeatable Shapes in Perfect Fourths
12:09 – Shape 4: All Notes on a Single String
13:43 – Repeating the Four Shapes Across All Six Strings
14:50 – How Four Shapes Cover the Entire Fretboard
15:08 – Practice Strategy: Slow, Focused, Ear-Driven
15:34 – How This Improves Real-World Improvisation
15:45 – Books, PDFs, and Continuing the Series