Understand more.
Memorize less.

“I’m really enjoying this course. It explains the fretboard logically, not just as shapes to memorise. As a bedroom guitar player with limited practice time, this is extremely valuable because it helps me use the whole guitar, not just one familiar position. Thank you.”

“The clearest and most practical path I’ve found for learning how to actually improvise on guitar. The visuals finally cracked the code for me after 17+ years.”

“At 56, I've had a guitar in hand for nearly 50 years. I was raised on bluegrass, found my dad's '59 ES-335 in '79, and ended up gigging in '80s and '90s hair metal bands. When the last of my four kids moved out, I dusted off the guitars to finally crack the code on lead playing and real improvisation. A book series and a CAGED course gave me a good foundation, but everything clicked when I found Keith's rectangles and stacks system. I printed the fretboard overlay, stared at it for hours, and had one lightbulb moment after another. Fretboard geometry finally makes sense in a "no duh" kind of way, and it's great to step out of the rhythm role and feel real freedom on the neck. Too bad I'm too old for another metal band.”

“Keith’s framework is totally unique — so straightforward, easy to grasp, and broadly applicable. I was improvising by the end of Module 1.”

“I'm taking Fret Science's Improv 101 and Complete Scale Fluency courses, and I can say it's opened my mind. I've been playing for many years, and I can play famous solos fluently, but I never quite managed to connect everything the guitar has to offer. I couldn't improvise beyond fitting in a few patterns and repeating ideas from well-known solos... But this method is giving me a clarity that has unlocked the whole neck. Seeing it as stacks and rectangles, with the root and other basic notes clearly placed, and following the method step by step, I've seen more results in a short time than I had in years. Other private teachers helped me a lot by explaining harmony and focusing my study, but never at this level. It's well worth it. I'd recommend it both to people who already play and to beginners. Of course, starting out is hard, because muscle memory comes little by little and takes a lot of consistency, time, and the will to do it... But the advantage of learning from scratch with a system this clear is that you won't waste time. My English isn't perfect, but I'm following the course without any trouble. I watch the videos with their Spanish subtitles, I have my PDFs and EPUBs for reviewing things, and the PDFs with the little there is to memorize. I've seen a lot of books, and I think this is innovative. I've never seen the modes made so simple and so logical to process visually, and therefore to bring into my improvising. Behind this is a scientific mind that has hit the nail on the head. Thank you, Keith.”

Translated from Spanish (see original)

“This is the course I’ve been waiting for my whole guitar life. It makes a lot of sense and just fits my brain.”

“The Rectangle and Stack changed everything for me.”

“The Rectangle and Stack concept made everything click. I’ve improved light-years from where I started.”

“Your approach of rectangles and stacks resonated with me, and after decades of playing, I've improved tremendously. Complete Scale Fluency builds on it in an intuitive way. Moving pentatonics across the neck, along with the horizontal and diagonal pathways, opened up the fretboard for me. It gave me a way to see the neck that I never could have worked out on my own.”

“I made a lot of progress in a relatively short amount of time. I’d greatly recommend this course.”

“I have been struggling for many years trying to learn guitar theory (and giving up repeatedly) and failing to understand how to use it in practical ways, musically speaking. Finally this course came out and the theory is actually clicking in my brain, and my hands are doing things I never thought possible on guitar.”

“Methodical and analytical, paired with clear PDFs and easy-to-follow videos with animations. Exactly how I needed it taught.”

“This is one of those treasures, that when you get, you want to gatekeep. I have played guitar for over 10 years, been through multiple teachers, and all of them tried to make me memorise stuff, without understanding what is going on behind it, and how to find patterns which our brain already likes finding in everything. Improv 101 really hit the mark on this. Obviously it's not some magic; you will have to put in the work, and even memorise some stuff, but it will all be in packets, so retaining won't be that hard. My old teachers were predominantly players who were teaching; Keith is a teacher. Apart from this, the one thing that kept me going is the length of each lecture: always about 5 minutes or less. This helps me at least, because with the limited time I get, I wanna dedicate it to practice, not watching 30-minute videos. Lastly, I would say, if you're still thinking about this course, I would say GO FOR IT.”

“I’ve been thoroughly warped. Side effects include seeing octaves everywhere.”

“Fret Science’s ‘rectangle-and-stack’ is the quickest way I’ve found to get to improvising. It provides a simple geometry for building and connecting scales across the fretboard, shows exactly where the chord tones are under your fingers, and uses ‘gear shifts’ to follow chord changes without getting lost. Improv 101 and Complete Scale Fluency helped me move from memorising scale shapes to seeing the scales, chord tones and target notes I can actually use when soloing.”

“This is a “must-have” website that is packed full with practical information. I can't imagine trying to learn how to navigate the fretboard and improvise any other way.”

“I always knew that music education was flawed in some way. I started music late in life, but I always had an interest in learning music since I was a young kid. I started keyboard piano in 2014, and I have religiously been studying music theory since then. Then, Fret Science comes along, and it’s like someone took the blindfold off! Please, spend some time with this awesome system! I clearly now understand modes, chords and arpeggios. I am creating musical phrases on the fly with just a small section of notes. I can see arpeggios and chord structure. Keith, thank you so much for coming into my music life. Go for the kids next: a child-friendly version of this course would be a game changer!!”

“Can’t get over how much success I’ve had since subscribing to Fret Science. I’ve been playing guitar off and on for 30+ years. I’ve read the book/articles by Jon Finn (and many others) and made several attempts to take a serious stab at improving my playing/improv. Nothing really seemed to “click” until I discovered Fret Science. Thank you, Keith, for creating such a thoughtful and simple pathway. After eight solid months of systematic work and practice, I’m absolutely flabbergasted at the progress that I’ve made.”

“I've been playing for a long time but only got serious a couple years ago. Have tons of books, watched lots of YouTube videos, and had a private instructor. The cost of Improv 101 is about what I paid for 1 month of private instruction. Having a teacher is great — I don't want to diminish that in any way. However this course lays out everything you need to become proficient in your instrument and understand what works and why. Keith explains it in a way that clicks, and honestly a lot of the concepts were new to me even after playing most of my life. I went from a bedroom guitarist to gigging with several musicians/bands by putting in the work learning what Keith is teaching here. My goal was to not have to learn solos note for note but to be able to make it up on the spot and improvise over keys or chord changes. I can do that now and honestly it feels great. If you are willing to put in the work, this course will give you the tools to improvise, jam with others, and start playing out loud what you have in your head.”

“This course has really demystified the fretboard, and given me the confidence to branch out and use the guitar in more creative ways and still sound coherent.”