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Fret Science

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Understand more, memorize less. This is where I work on Fret Science in public: what's new on the site, what I'm building and measuring, and the ideas behind the method. Updated when I have something worth sharing.

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Fret Science
Text • Keith

Every course now comes with 30 days of the practice tools

If you own Improv 101 or Complete Scale Fluency, you now get 30 days of every practice tool on the site, the Practice Planner included. The 30 days start when you press Start, and past buyers qualify too.

Read the full post on fretscience.com →

Fret Science
Text • Keith

The Practice Planner: what to practice today, and how it's going

The Practice Planner keeps a list of the exact things you're working on, tells you each day which of them are due, and shows you whether they're getting better. It's open to Silver members and up.

Read the full post on fretscience.com →

Fret Science
Text • Keith

New video: Billy Strings' teacher's killer scale exercise

The video on Robb Cappelletto's six-position scale exercise is out. It teaches the exercise the way Robb laid it out, then rebuilds the same shapes from building blocks that work from any root, on any string, and in the modes.

Read the full post on fretscience.com →

Fret Science
Text • Keith

Behind the scenes on the Robb Cappelletto video

A look at the Final Cut Pro timeline for the upcoming video on Robb Cappelletto's six-position scale exercise: how the edit is put together, and what's left before it goes live.

Read the full post on fretscience.com →

Fret Science
Text • Keith

The Complete Scale Fluency Course Guide is in print

The Complete Scale Fluency Course Guide is now a spiral-bound color book, for anyone who has the course and wants a copy to write in and keep on the music stand.

Read the full post on fretscience.com →

Fret Science
Text • Keith

I took a master class with Billy Strings' teacher. Here's his killer scale exercise.

In August I took a fretboard geometry master class with Robb Cappelletto, Billy Strings' teacher. His six-position scale exercise covers the whole neck, and the new written lesson rebuilds every shape in it from three building blocks.

Fret Science
Text • Keith

The Timing Game: a score for your sense of time

A metronome that clicks on every beat keeps time for you. The new Timing Game takes clicks away and measures how steady you stay without them, so you can see whether your internal time is improving.

Fret Science
Text • Keith

What's new on the site, October 2026

Signing in is now one step, the practice tools share one layout, the Jam Track Player's chart follows the music, and several smaller changes came straight from your suggestions.

Fret Science
Text • Keith

Complete Scale Fluency is finished

The last lesson came out on Saturday, October 10, so all seven modules of Complete Scale Fluency are now on the site, along with the finished Course Guide as a PDF and an EPUB in right- and left-handed editions.

Fret Science
Text • Keith

Measuring the Vibrato of Nine Guitar Heroes

How wide, how fast, and how long before it starts? I pitch-tracked 150 vibratos by nine guitarists, from Angus Young and David Gilmour to B.B. King and Stevie Ray Vaughan, using isolated guitar tracks, and tested the claim that bend vibrato only goes below the bent pitch. A first look, with a lot of caveats.

Fret Science
Text • Keith

Eight Nights, 2,300 Miles, and a Very Loud Guitar Camp in Tennessee

A road trip from Massachusetts to the Woodshed Guitar Experience in Crossville, by way of Cleveland, Nashville, and the Martin factory. What I saw, who I met, and what I brought back for Fret Science.

Fret Science
Text • Keith

Three robust shortcuts that can save you years

The conventional wisdom is that there are no shortcuts to becoming a good musician. On guitar, that is patently false. In this video, I share three…

Fret Science
Text • Keith

Every scale, everywhere, all at once

I've been working on the idea for this video for a few months. It started as a reaction to one of Rick Beato's livestreamed "the ultimate guitar fretboard…

Fret Science
Text • Keith

How to improvise over chord changes by finding only one note by name

Improvising solos over chord changes can be intimidating—but it doesn't have to be! If you can find one note by name, anywhere on the fretboard, you can…

Fret Science
Text • Keith

Pentatonic gear shifts

This technique was an epiphany. Once I figured out that you could shift pentatonic scale shapes up or down in response to chord changes, my melodic soloing…

Fret Science
Text • Keith

Fret Science: Improv 101

A high level overview and detailed syllabus for the Fret Science: Improv 101 course

Fret Science
Text • Keith

An invitation to join me on Patreon

As a way of releasing content much more frequently, and as a way to make motivate myself to make more progress on the future Fret Science book, I'm…

Fret Science
Text • Keith

Cowboy chord superpowers

Cowboy chords, often criticized by experienced guitarists, can unlock hundreds of chord variations across the fretboard by mastering just five of them. These chords are essential for AC/DC’s rhythm guitar sound, effective capo usage, and quick learning of triads across the fretboard. Check out the video for more details.

Fret Science
Text • Keith

The Big Picture

The Fret Science method connects music theory concepts like CAGED, 3NPS, pentatonic scales, triads, and major scale modes to master the fretboard. This approach provides a big picture view, enabling improvisation by visualizing the notes as a palette of sounds. Watch the video for a concise explanation.

Fret Science
Text • Keith

The Dickey Betts hexatonic scale

Jack Ruch is one of my favorite guitar YouTubers because of his beautifully lyrical phrasing and excellent teaching style. He recently released a tribute to…

Fret Science
Text • Keith

How to memorize the fretboard

Why do so many guitar players resist learning the notes on the fretboard? This is my most complex set of animations so far, built in service of the simplest…

Fret Science
Text • Keith

Instant harmony: just add thirds

Instantly create harmonized solo guitar lines with parallel 3rds and 6ths

Fret Science
Text • Keith

Intervals: guitar's "secret decoder ring"

New video! Intervals give you the keys to unlocking the fretboard. Learn a simple method for identifying the interval between any two notes on the fretboard, and see how to use that knowledge to better understand (and modify) any chord voicing.

Fret Science
Text • Keith

3nps: an essential tool for all guitarists

The three-notes-per-string system is by far one of the best ways to navigate the fretboard both vertically and horizontally. It's easy to learn, and with this method, there's 85% less memorization.

Fret Science
Text • Keith

The modes explained clearly

What are the major scale modes? How do they relate to the pentatonic scale? What on earth is "brightness ordering"? All this and more are explained herein!

Fret Science
Text • Keith

The modes are hidden in plain sight -- expanded

If you already know the pentatonic scale anywhere on the fretboard, you can instantly access the major scale modes by understanding how the modes relate to the pentatonic scale and to each other. This is a significantly expanded and improved version of an approach described in a previous video.

Fret Science
Text • Keith

The CAGED System (and Triads) Simplified

This ~16 minute video deconstructs the CAGED system using easy-to-understand animated building blocks (over 150 animations!), starting with triads, adding on pentatonic scales, and finishing with the major scale modes. This is everything you need to unlock the fretboard and get started improvising.

Fret Science
Text • Keith

The rectangle and the stack: the video

The thumbnail is a teeny bit hyperbolic, but it's not clickbait! The rectangle and the stack are the easiest way to make the most of the pentatonic scale.

Fret Science
Text • Keith

Master the modes tonight

Learn the simple five-string pattern that completely unlocks the modes across the entire fretboard.

Fret Science
Text • Keith

Learn the best way to visualize chords and scales and move them across the fretboard

How does the quirky tuning of the G and B strings affect scales and chords? Learn to traverse "the warp" and use the circle of fifths to navigate the fretboard with 80% less memorization. See how it applies to triads, the pentatonic scale, and soloing in the blues.