Harmonized solo guitar lines elevate some of the greatest guitar music -- everything from The Beatles to Nuno Bettencourt. This video teaches the easiest way to create these lines, with just enough music theory to get by and pointers to more in-depth explanations as needed.

► This video was sponsored by Martin Guitars, who kindly sent me the SC-13E Special used in the demonstrations.

► Keywords: 3rds harmony, 6ths harmony, Paul McCartney, Nuno Bettencourt, guitar lesson, music theory, intervals, major scale

► To see how this video fits into the big picture of fretboard understanding, check out this overview video:    • A new and faster way to unlock the fr...  
or download a FREE 12-page overview e-book: https://fretscience.myshopify.com/pro...

► For downloadable/printable "cheat sheets" for this video and others, visit: https://fretscience.myshopify.com/

► You can learn more, sign up for my email newsletter, or contact me at: https://fretscience.com

► Gear used in this video
Martin SE-13E Special acoustic guitar - https://sweetwater.sjv.io/LXoyBZ
Fishman Aura Spectrum DI Imaging Pedal - https://sweetwater.sjv.io/9gxjDy
TC Electronic Hall of Fame 2 Reverb - https://sweetwater.sjv.io/rQeqrR
Focusrite Scarlett 2i2 Audio Interface - https://sweetwater.sjv.io/eKJ5Xj

► Other gear I use and recommend (affiliate links):
TC Electronic Infinite Sustainer Pedal - https://imp.i114863.net/doNAyq
TC Electronic PolyTune 3 Mini Tuner - https://imp.i114863.net/ZdnDVQ
TC Electronic Ditto+ Looper - https://sweetwater.sjv.io/5gmDEN
Digitech Trio+ Pedal - https://imp.i114863.net/5b2Xn3
Boss RC-500 Loop Station - https://imp.i114863.net/MXG1K3
D'Addario NYXL strings - https://imp.i114863.net/QOZRbx
MXR Six Band EQ Pedal - https://imp.i114863.net/QOZgYM
PRS Guitars - https://imp.i114863.net/LPAG0L
Bose S1 Pro PA - https://imp.i114863.net/GjP5Kr
Pedaltrain pedal boards - https://imp.i114863.net/BXmQKx
Voodoo Lab Pedal Power X8 - https://imp.i114863.net/WDWLYG
Electro-Harmonix Freeze Pedal - https://imp.i114863.net/Earj0e
TC Electronic Plethora X5 - https://imp.i114863.net/VyzWOa
MXR EVH 5150 Overdrive pedal - https://imp.i114863.net/AoxDPx
Wampler Tumnus Overdrive - https://imp.i114863.net/9W43V0
World's Best Cables 10' (Mogami/Neutrik) - https://amzn.to/3lq4OlD
World's Best Cables 15' (Mogami/Neutrik) - https://amzn.to/3YqxCZY

► Recommended video viewing order:
Full playlist:    • Guitar scales made easy (Recommended ...  

Individual videos:
1. Use "the warp" to reduce memorization:    • HOW TO VISUALIZE CHORDS & SCALES: A s...  
2. Master the pentatonic scale with the rectangle and stack:    • Two Simple Shapes UNLOCK the Pentaton...  
3. Learn the notes!:    • Memorize the fretboard: 3 reasons why...  
4. Intervals: Guitar's secret decoder ring:    • Intervals: guitar's secret decoder ring  
5. Understand the modes:    • Demystifying the modes on guitar: it ...  
6. The best way to learn/play the modes:    • This hack makes learning the modes on...  
7. Another easy way to play the modes:    • Learn ALL the Modes on Guitar in Just...  
8. The CAGED system and triads:    • Demystifying Triads and CAGED: Unlock...  
9. The 3nps system:    • Unlock the fretboard with three notes...  
10. Instant harmony:    • Easy Double-Stop Harmonies: From The ...  

► Chapters:
00:00 - Introduction
02:41 - Steps 1-3: Diatonic thirds in the major scale
04:41 - Takeaways from Steps 1-3
05:30 - Live action debut! (and gear overview)
06:58 - Fingerings
08:29 - Fingering summary
09:06 - "Brown Eyed Girl" 3rds example
10:34 - "Decadence Dance 6ths" examples
12:48 - "Blackbird" spread-thirds example

► Thank you to Dave DiCenso (drums), Jeff Gilman (bass), and Jake Shapiro (guitar, cello) for providing the theme music "Sea Horses".