TOMusic Theory

TOMusic Theory "Music is not just sound, but above all a space for exploration. I strive to visualize music theory through graphic imagery."

I’m a guitarist on a journey between jazz, general musical expression, and a personal approach to music theory.

Larry’s staring at the sports channel again, where endless Wimbledon has been running for three days straight. He’s hold...
21/01/2026

Larry’s staring at the sports channel again, where endless Wimbledon has been running for three days straight. He’s holding a pint, and without looking at me, he slides a crumpled piece of paper across the table between damp beer coasters. Through clenched teeth, he mutters:

“Tell those frogs to damn well learn the half-diminished seventh chord. Hit it like Federer serving on match point. Because this isn’t just some theory from a beginner’s textbook — this is the cornerstone of the dominant core on the second degree of a minor key. And you know what? It’s also a rootless G #9. Yeah, rootless. Because roots are for gardeners, not jazz players.”

“And listen — with ninth chords, you can play an entire blues night so hot the girls will be throwing their panties on stage like the neighbor’s lost kid with a slingshot. And that means something.”

Give Larry a like. Not because he cares — but because he could just be watching tennis and ranting about the government. Thanks for the comments, even if Larry’s patience isn’t bottomless. But for now, it’s holding.

One of Larry’s greatest tricks for dazzling and charming a mysterious lady is his unfailing command of basic Cm7 drop 2 ...
07/01/2026

One of Larry’s greatest tricks for dazzling and charming a mysterious lady is his unfailing command of basic Cm7 drop 2 voicings.

As Larry himself would say:
“You’ve gotta have these grips down cold. Even if a waitress wakes you up at noon — the one who only remembers you by your cologne and the minibar bill. No excuses. Jazz is a tough love. But if you master it, it pays you back with interest. And don’t let anyone tell me otherwise.” 🎷🕶️💋

I apologize in advance — and retroactively — for Larry’s refined vocabulary and somewhat assertive manner of expression....
30/12/2025

I apologize in advance — and retroactively — for Larry’s refined vocabulary and somewhat assertive manner of expression. Larry is a creature allergic to daylight; he knows only the dim glow of neon signs in jazz clubs, casinos, 24-hour bars, and forgotten roadside motels. His origins are as murky as some of his altered dominants: his mother worked in a night establishment, he never met his father, and he was raised by her colleagues in a discreet little red house on the edge of town.

Despite his passion for alcohol in all its forms — and his life motto, “every drink tastes best before lunch” — Larry is above all a respected connoisseur of jazz harmony. He can explain it with clarity and simplicity, though occasionally prone to choleric outbursts, as he doesn’t like repeating himself.

---

Larry finishes dancing with a girl who sways like a bossa nova chorus and looks like she could be his niece — if he had a sister. The guitarist has just wrapped up the coda of “Days of Wine and Roses,” but suddenly starts tuning his G string, which seems to have developed a will of its own. No one minds — it’s a half-empty bar where the music blends with a loudly playing sports channel on TV.

Larry slumps into his seat before his dance partner, smooths his jacket, takes a sip of martini, and with a look of solemn interest at the screen — as if there were something profound in a tennis serve — he says:

“Tell those geniuses to finally learn C7 and its drop 2 inversions. What do they think — that I’ll dictate every note like it’s first grade? Ha! Let them grease their gears a bit — preferably with Irish whiskey, it’s the best lubricant.”

He winks at the waitress, who brings him another drink without being asked.

“Alright, alright… I’ll write them that pathetic little guide. But only because I’m in a good mood today and that damn guitarist finally stopped tuning like a drunk watchmaker.”

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“1. Forget open strings. Jazz ain’t country. Muting is essential. Otherwise it sounds like a harp after a thunderstorm.

2. Green = root note C. I know, it’s like painting numbers on doors, but I’m thinking of the sweethearts who haven’t memorized the fretboard yet.

3. Of course the number means fret — unless the shape is in first position.

4. Since some folks thought my smileys weren’t smiley enough, I replaced them with beer bottles. Hopefully it’s clear that means the chord is playable, comfy, and even after ten drinks you can still nail it — and disarm any lady who happens to pass by.

5. Vertical = strings. Horizontal = frets. If that’s news to you, I suggest starting with a guitar-themed jigsaw puzzle.

6. Drop 2 voicings are a gift from the heavens. Every note on a different string, different finger, different direction. Sounds like an orchestra, plays like butter. Left to right — it’s a symphony. Top to bottom? Still great, though one note clings on like an ex on Messenger.”

---

“You’ve gotta have these grips down cold. Even if a waitress wakes you up at noon — the one who only remembers you by your cologne and the minibar bill. No excuses. Jazz is a tough love. But if you master it, it pays you back with interest. And don’t let anyone tell me otherwise.”

Many of you may have already come across the guitar diagrams of the legendary Larry Laffer, who not only brims with know...
25/12/2025

Many of you may have already come across the guitar diagrams of the legendary Larry Laffer, who not only brims with knowledge of jazz harmony but also has an exceptional skill — he’s able to seduce almost any woman with a single chord… or, if necessary, two.

In the picture you can see seventh-chord progressions in Drop 2 voicings. Larry knows very well that a simple and quick gesture can disarm a woman instantly. That’s why he marked with a smiley the chords that sound good and, most importantly, are easy to play. The others are worth knowing too, but Larry uses them only in special cases, when the tried-and-true tricks no longer work.

Give Larry a like so that he’ll sacrifice a bit of his precious time otherwise spent in bars and casinos and send us more clear, well-organized diagrams.

Larry has really fallen in love with this chord. Do you know what it is? And could it even be some kind of rootless chor...
17/12/2025

Larry has really fallen in love with this chord. Do you know what it is? And could it even be some kind of rootless chord?

The Modal Galaxy 2.0“The symmetry of the natural scale and its diatonic seventh chords arranged into parallel modes from...
15/12/2025

The Modal Galaxy 2.0

“The symmetry of the natural scale and its diatonic seventh chords arranged into parallel modes from the brightest to the darkest and beyond.”

I have clarified and simplified my diagram The Modal Galaxy. The fact that these modes can be represented so symmetrically confirms the genius of the natural scale system (WWHWWWH), and perhaps this is why this scale became the foundation of functional harmony—a system formed as early as the Baroque period (18th century, J.S. Bach), and one that still underlies today’s popular music. No other scale would produce such a smooth and regular symmetry in this visualization, where the modes follow one another from the brightest to the darkest.

It might seem unnecessary or confusing. To fully grasp this diagram, you need prior knowledge of functional harmony, jazz seventh chord symbols, the concept of parallel modes, and the reasoning behind ordering modes from the brightest to the darkest (Lydian, Ionian, Mixolydian, etc.).

What it’s good for:
This system helps you find modulation chords between modes and identify the closest modulation (a modulation in which only a single tone changes by the shortest possible motion—a semitone). This type of modulation sounds very natural and is often sought out by musicians and composers. You can also notice the columns of chords with the same quality, which is meaningful in popular music, where guitarists often shift the same chord shape up and down the fretboard.

For me, it’s a great source of inspiration. Often, just observing and searching for harmonic relationships for a moment is enough. Maybe you’ll discover something too.

You can download my artwork as a full quality 4961 x 7016 px 600PPI (A1 poster) in PDF on link here: https://tomasskalsky.gumroad.com/l/kxanj

What chord is it if we assume the root is C? Could you come up with a logical three-chord progression where this chord w...
12/12/2025

What chord is it if we assume the root is C? Could you come up with a logical three-chord progression where this chord would be the second one?

05/12/2025

When you play in a band, the playing is moderate, other instruments do a lot of things for you, and it's better to think as a team. With a solo instrument, it's the opposite, you can think as a band. My video is about something like that.🎸🛸

Building Layers on the Handpanhttps://youtube.com/shorts/SzQaYUhu7C4?feature=share🎵 New Handpan Video! 🎵How important is...
22/11/2025

Building Layers on the Handpan
https://youtube.com/shorts/SzQaYUhu7C4?feature=share

🎵 New Handpan Video! 🎵
How important is it to learn how to build a rich, step-by-step layered composition on the handpan? And why is it essential to include the element of improvisation in your playing?

In my latest video “Building Layers on the Handpan”, I’ll show you how to gradually add four key layers to your music.

🎬 Watch the full video at the link and explore more on my YouTube channel!

Discover how to build a rich, layered handpan composition step by step. In this lesson, I break down four essential layers — from basic chords to bass notes,...

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