Snap eindelijk het fretboard.
Stop memorizing shapes.
De meeste gitaristen leren vormen uit hun hoofd. Maar weinigen snappen waarom ze werken.
Dit is het visuele systeem dat het fretboard van willekeurig naar vanzelfsprekend brengt — zodat je nummers kunt schrijven, bewust kunt improviseren, op gehoor kunt spelen en eindelijk begrijpt wat je speelt. Geen bladmuziek. Geen piano. Geen voorkennis van theorie nodig.
Most guitarists memorize shapes.
Very few understand music.
You can play. You know your open chords. Maybe a pentatonic scale. But you can't explain why any of it works — and that's the wall that stops most guitarists from ever becoming musical.
Memorized shapes.
You can play songs. You remember chord grips. You know a few scale boxes. But if someone asks you to play in a different key, you freeze — because you don't know why the shapes work.
- Can't transpose to a new key
- Can't write your own progressions
- Can't follow what other musicians say
The language behind them.
Once you see why a chord is built the way it is, the shapes stop being random. They become a vocabulary you can speak fluently — in any key, anywhere on the neck, in any musical situation.
- Move freely between any key
- Write progressions intentionally
- Speak the language of music
Music theory wasn't hard.
The explanations were.
Most theory books were written by classically-trained pianists for conservatory students. They assumed you read sheet music. They used Italian terms. They asked you to memorize forty modes before you'd written a single song.
That format wasn't built for self-taught guitarists who learn by seeing, hearing, and playing. The information wasn't wrong — the delivery was.
"I started in 2008 with a MIDI keyboard and FL Studio, no theory. From 2010 to 2015 I taught music production on YouTube as MellaMayne — but I still couldn't really play the guitar. Years later, after my first book (Music Theory Simplified, for piano) found readers, I wrote the guitar version I wish I'd had at the start."
and start seeing it on the fretboard."
Zo leren de meeste theorieboeken het. Sleep en ontdek een betere manier.
Sleep de schuifregelaar en zie waarom 200.000+ muzikanten kiezen voor Gitaar: theorie eenvoudig uitgelegd.
Vast bij een concept? Gewoon scannen en kijken.
Elk hoofdstuk heeft QR-codes die direct op de pagina staan.
Geen app, geen login.

Zie precies hoe het boek uitlegt.
Explore real chapters and flip through actual pages from Guitar Theory Simplified.
Every chapter tells you
exactly where you're going.
No fluff. No wasted time. Each chapter is structured to help you learn faster, stay focused, and actually understand.
Niveau
Je weet vooraf of een hoofdstuk voor beginners, gevorderden of experts is.
Benodigde tijd
De meeste hoofdstukken kosten 1-3 uur, dus je leert in je eigen tempo.
Duidelijk resultaat
Elk hoofdstuk begint met wat je kunt als je het af hebt.
123456Wat je leert
Zie precies welke begrippen en vaardigheden het hoofdstuk behandelt.
Wat je nodig hebt
Geen verrassingen. Elk hoofdstuk vertelt precies welke hulpmiddelen je gebruikt.
Sla over als je dit al kent
Ken je het al? Spring vooruit en focus op wat je nog niet weet.
Een compleet leersysteem.
Jargongidsen. Visuele spiekbriefjes. QR-videolessen. Alles wat je nodig hebt om muziektheorie eindelijk te snappen.
183 pages.
9 fundamental concepts. One connected system.
Every chapter builds on the last. Each one includes visual diagrams, a cheat sheet, a jargon guide, and a QR code linking to a video tutorial. Click any chapter to see what's inside.
01 De basis van de piano
02 De basis van de gitaar
03 Toonsoorten & toonladders
04 Harmonie — intervallen & akkoorden
05 Het CAGED-systeem
06 Akkoordenschema’s
07 Muzieknotatie
08 Ritme & maat
09 De kwintencirkel
Zie hoe het fretboard van willekeurig vanzelfsprekend wordt.
Toggle below to see the difference between how most guitarists see the fretboard — and how you'll see it after the Harmony chapter.

Het fretboard voelt willekeurig.
Je leert een akkoordvorm. Dan een andere vorm. Je vergeet welke welke is.
132 losse noten om één voor één te onthouden.

Het fretboard is een patroon.
Elk akkoord is grondtoon + terts + kwint in verschillende posities.
132 noten worden één systeem dat je overal toepast.
The book that finally made theory click
for thousands of self-taught guitarists.
After 12 years, the fretboard finally makes sense.
Two weeks in and I'm writing my own progressions.
I can finally jam without freezing.
Real photos from real readers.
Understood the fretboard in 2 days.
I'm not exaggerating. Chapter 4 broke down what every other book skipped.
10 years playing. Modes finally make sense.
The Keys & Scales chapter showed me modes as colors instead of seven random shapes. Mind blown.
Best gift I've ever given my son.
Three weeks later he's writing his own riffs and explaining theory to me. The QR videos are gold.
Wrote a full song in one weekend.
The Chord Progressions chapter and the Roman numerals system is pure gold. Bought the mousepad too.
Bridged piano theory and guitar in a weekend.
As a producer who only knew theory on piano roll, this book finally got me playing it on guitar.
The QR videos made the CAGED chapter click.
Was stuck on CAGED for 20 minutes, scanned the code, watched the 2-min video, instant clarity. Best theory book I've bought.
I'm 56 and finally feel like I understand guitar.
Wish I had this 30 years ago. The Harmony chapter alone was worth twice the price.
Finally a theory book that doesn't feel like school.
I'd given up on theory three times before this. The 'why' explanations finally clicked. Now I'm writing songs again.
I keep it on my amp every practice session.
Lives on top of my amp. Open it, scan a QR, learn one concept, jam. Repeat. Best $25 I've spent on guitar.
Mi nueva biblia de teoría.
Por fin un libro de teoría que entiendo. Los códigos QR con los videos de Melvin son oro puro.
Worth every cent of the investment.
Clear writing, no fluff, immediately useful. The CAGED system finally clicked after years of trying.
Wish someone gave me this 10 years ago.
I'm an acoustic fingerstyle player and theory always felt out of reach. This book made modes feel obvious.
Hear it from guitarists
who've been through it.
Unedited videos from readers about their experience with the book. The good, the honest, and the "I wish I'd found this sooner" moments.
One transformation.
Four tools.
The book teaches the framework. The companions make it stick.
Het boek
183 pagina’s van ‘wat is een akkoord?’ tot ‘ik kan elk akkoordenschema schrijven’.
De muismat
Het spiekbriefje ligt elke dag onder je handen. Theorie wordt spiergeheugen.
Fretboard-stickers
Breng het notensysteem over op je hals. Train je ogen terwijl je speelt.
De poster
Toonladders, intervallen en de CAGED-kaart — altijd in je ooghoek.
Pick your edition.
Start understanding tonight.
Het boek — pdf
- 183-page PDF · all 9 chapters
- QR video tutorials included
- Searchable, any device
- 30-day refund
Het boek — paperback
- Full-color paperback (183pp)
- QR video tutorials included
- Worldwide tracked shipping
- 30-day refund
Complete editie
- Full-color paperback (183pp)
- Instant PDF (read tonight)
- QR video tutorials
- Worldwide tracked shipping
- 30-day refund
De complete gitaarbundel
- Paperback + instant PDF
- Cheat sheet mousepad
- Fretboard stickers
- Wall poster (24″×36″)
- 30-day refund
Accessories for your Guitar Theory book.
64% of readers added at least one. Bundle & save up to 25% — plus unlock free gifts at €35 and €55.
From confusion
to fluency.
This isn't about adding more information. It's about how you experience the guitar from this point forward.
- Memorizing chord shapes
- Stuck in two positions on the neck
- Noodling without direction
- Confused when musicians talk theory
- Writing progressions that "sort of work"
- Freezing when someone calls a key
- Writing songs that actually sound the way you want
- Playing songs by ear instead of hunting for tabs
- Improvising with intention, not luck
- Learning new songs faster by recognizing patterns
- Jamming confidently in any key, anywhere on the neck
- Finally understanding what you're playing — and why
What makes this different from free YouTube tutorials?
YouTube teaches isolated tricks. This teaches a connected system.
I'm a complete beginner. Is this too advanced for me?
No. The book starts with zero assumptions.
I've tried theory before and it always felt overwhelming. Why will this be different?
Because most theory is taught as abstract concepts on paper.
Do I need to read sheet music or know piano?
No. Everything is taught visually on the guitar fretboard.
Does it work for acoustic and electric?
Yes. The fretboard layout is identical.
What if it doesn't help me?
30-day full refund.
What's the difference between the PDF and the paperback?
Content is identical. The PDF is instant; the paperback ships.
How long does shipping take?
Physical orders are processed within 1–3 business days. Delivery estimates vary by destination and shipping service; see our Shipping Policy for current timings.
How do the QR codes work? Do I need internet?
Open your phone's camera, point at the code, watch.
I play left-handed / 7-string / drop tunings — does it still work?
Yes. Music theory is the same regardless.
How long does it take to finish the book?
No rush. Most readers take 8–15 hours cover-to-cover.
Can I get this if I'm in the EU? VAT & customs?
Yes — we ship worldwide. VAT included at checkout.
The same method, refined across five instruments.
Built on the same visual, plain-English approach that made Music Theory Simplified (the piano edition) a hit. Each book is independent — pick the one for your instrument.
Stop met vormen stampen. Ga muziek begrijpen.
Een visueel systeem voor gitaristen die zichzelf lesgeven.












