Snap eindelijk muziektheorie.
Stop guessing.
De meeste mensen leren nummers uit hun hoofd. Maar weinigen snappen waarom ze werken.
Dit is het visuele systeem dat muziektheorie van willekeurig naar vanzelfsprekend brengt — zodat je nummers kunt schrijven, bewust kunt improviseren, op gehoor kunt spelen en eindelijk begrijpt wat je speelt. Uitgelegd op het toetsenbord, toepasbaar op elk instrument. Geen voorkennis van theorie nodig.
Most people memorize songs.
Very few understand music.
You can play a few songs. Maybe some chords you found online. But you can't explain why any of it works — and that's the wall that stops most self-taught musicians from ever becoming truly musical.
Memorized shapes.
You can play songs. You remember chord shapes. You know a few scales. 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, across the whole keyboard, 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 musicians and producers 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 every theory book I opened was written for conservatory students, not self-taught producers. So I wrote the book I wish I'd had at the start: Music Theory Simplified — the whole language of music, explained visually on the piano."
and start seeing it on the keyboard."
Zo leren de meeste theorieboeken het.
Sleep en ontdek een betere manier.
Sleep de schuifregelaar en zie waarom 200.000+ muzikanten kiezen voor Muziektheorie eenvoudig uitgelegd.
Vast bij een concept? Gewoon scannen en kijken.
Elk hoofdstuk heeft QR-codes die direct op de pagina staan. Open de camera van je telefoon, scan de code en bekijk meteen een korte videotutorial waarin Melvin het concept persoonlijk met je doorloopt.
Geen app, geen login.

Zie precies hoe het boek uitlegt.
Explore real chapters and flip through actual pages from Music 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.
120 pages.
7 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 Componeren: toonsoorten & toonladders
03 Harmonie: gids voor akkoorden
04 Akkoordenschema’s
05 Muzieknotatie
06 Ritme & maat
07 De kwintencirkel
Zie hoe het toetsenbord van willekeurig vanzelfsprekend wordt.
Toggle below to see the difference between how most beginners see the keyboard — and how you'll see it after the Harmony chapter.

Theorie voelt willekeurig.
Je leert een akkoord. Dan een toonladder. Dan voortekens. Elk voelt als een losse regel om te onthouden. Je vergeet welke welke is en blijft hangen, eeuwig gokkend.
Tientallen losse regels om één voor één te onthouden.

Het is allemaal één patroon.
Elk akkoord is grondtoon + terts + kwint. Elke toonsoort volgt dezelfde formule. Zodra je ziet hoe intervallen op het toetsenbord samenhangen, bouw je elk akkoord, in elke toonsoort.
Tientallen regels worden één systeem dat je overal toepast.
The book that finally made theory click
for thousands of self-taught musicians.
After 12 years, music theory finally makes sense.
Two weeks in and I'm writing my own progressions.
I can finally play without freezing.
Real photos from real readers.
Understood the keyboard in 2 days.
I'm not exaggerating. The Harmony chapter broke down what every other book skipped.
10 years playing. Scales finally make sense.
The Keys & Scales chapter showed me scales as patterns instead of random notes. Mind blown.
Best gift I've ever given my son.
Three weeks later he's writing his own songs 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 my ear and the theory in a weekend.
As a producer who only knew the piano roll, this book finally connected the sounds to the theory.
The QR videos made the chords chapter click.
Was stuck on chord building 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 music.
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 piano every practice session.
Lives on my piano. Open it, scan a QR, learn one concept, play. Repeat. Best $25 I've spent on music.
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 Circle of Fifths finally clicked after years of trying.
Wish someone gave me this 10 years ago.
I'm a self-taught player and theory always felt out of reach. This book made scales feel obvious.
Hear it from musicians
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
120 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.
Pianostickers
Zet op elke toets een afneembare notensticker. Train je ogen terwijl je speelt.
De poster
Toonladders, intervallen en de kwintencirkel — altijd in je ooghoek.
Pick your edition.
Start understanding tonight.
Het boek — pdf + epub
- 120-page PDF + EPUB · all 7 chapters
- QR video tutorials included
- Open on Kindle, iPad, Apple Books, anywhere
- 30-day refund
Het boek — paperback
- Full-color paperback (120pp)
- QR video tutorials included
- Worldwide tracked shipping
- 30-day refund
Complete editie
- Full-color paperback (120pp)
- Instant PDF + EPUB (read tonight)
- QR video tutorials
- Worldwide tracked shipping
- 30-day refund
Accessories for your Music 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 music from this point forward.
- Memorizing chord shapes
- Stuck playing the same few chords
- 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, across the whole keyboard
- 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. Most free tutorials assume you already understand something the previous one didn't teach — so concepts never compound. This book gives you the framework that ties them together, in order, so each chapter builds on the last.
I'm a complete beginner. Is this too advanced for me?
No. The book starts with zero assumptions. Chapter 1 begins with the keyboard, note names and the music alphabet. Each chapter builds on the last. Most beginners report concepts clicking within the first week.
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. This book teaches everything visually on the piano keyboard — where music theory is easiest to see. That's why readers say it finally clicks where other books didn't.
Do I need to read sheet music already?
No. You'll learn to read music inside the book — the Notation chapter covers it from scratch. Nothing is assumed. Everything starts at the beginning.
Does it work for my instrument, not just piano?
Yes. The theory in this book — scales, chords, progressions, rhythm, the circle of fifths — is universal. It's taught on the piano because that's where it's clearest to see, then it applies to any instrument you play.
What if it doesn't help me?
30-day full refund. No forms, no friction, no "tell us why." If theory still feels confusing after 30 days, we refund you and you keep what you've learned.
What's the difference between the PDF and the paperback?
Content is identical — same 120 pages, same QR videos. The PDF arrives instantly by email and is searchable on any device. The paperback is a full-color print edition shipped to your door. The Complete Edition tier includes both.
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. You'll get a tracking link by email as soon as your order leaves our warehouse. PDF orders are instant — delivered to your inbox within minutes of checkout.
How do the QR codes work? Do I need internet?
Each chapter has QR codes printed on the page. Open your phone's camera, point at the code, tap the link that appears, and the video starts. You'll need an internet connection to stream the videos, but the book itself works completely offline.
Is this only useful for pianists?
Not at all. The piano keyboard is simply the clearest way to see how music works — but every concept (scales, chords, harmony, rhythm, the circle of fifths) applies to guitar, bass, ukulele, voice, production, any instrument. It's a music theory book, taught on the keyboard.
How long does it take to finish the book?
There's no rush. Each chapter is built around bite-sized lessons with an estimated time at the top (most are 15–60 min). Reading cover-to-cover takes most readers 6–12 hours. But most don't read it once — they reference it for years. Think of it less like a novel, more like a manual you keep on your desk.
Can I get this if I'm in the EU? VAT & customs?
Yes — we ship worldwide. VAT is calculated at checkout based on your country, so the price you pay is the final price. For paperback orders within the EU, no separate customs fees apply.
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 gokken.
Ga muziek begrijpen.
Een visueel systeem voor muzikanten die zichzelf lesgeven.












