Unlock the mystique of the Japanese Kumoi Scale: A dark, alluring, and exotic sound for guitarists. In this article lesson, I will tell you about the scale, its history and uses, and provide you with the 5 pentatonic box shapes I've created for it, plus a bonus diagonal run to connect them together.

What is the Kumoi Scale?

The Kumoi scale, a haunting and lesser-known pentatonic scale, offers guitarists a unique and expressive palette that’s both exotic and evocative. In the key of A (which we'll be using as the example throughout this article lesson), the Kumoi scale consists of the notes A, Bb, D, E, & F, corresponding to the intervals R, b2, 4, 5, & b6. This combination creates a dark, unresolved sound that feels both grounded and haunting. Its obscurity in Western music stems from its infrequent use compared to common scales like the major or minor pentatonic, making it a compelling choice for guitarists looking to stand out.

A Brief History of The Kumoi Scale

The Kumoi scale, also known as Kumoijoshi, originates from traditional Japanese music, where it is used in folk and classical compositions for instruments like the shamisen and koto. Its name, derived from the Japanese word kumo (cloud), evokes ethereal, drifting melodies that carry a sense of mystery. Rarely heard in Western music, the Kumoi scale remains an obscure gem for guitarists seeking to explore unconventional sounds with a touch of cultural depth. And by the way, if box shape #3 sounds familiar to you, it's because that's another standout Japanese Pentatonic scale: The "Hirajoshi" scale. That's right - the Kumoi and Hirajoshi are relative modes of one another!

When and How to Use It

I personally use this scale as a substitute for the Phrygian and Phrygian Dominant scales. If you ever find yourself jamming in these scales, remember: this is a perfect opportunity to bust out the Kumoi! But why does it work? Why can we play The Kumoi Scale in Phrygian and Phrygian Dominant contexts?

Here’s how it works and why you can play the A Kumoi Scale in an A Phrygian or A Phrygian Dominant context:

Phrygian:
The A Phrygian scale (A, Bb, C, D, E, F, G) is known for its dark, Spanish-flavored sound, driven by its flattened second (b2). The A Kumoi scale (A, Bb, D, E, F) shares the notes A, Bb, D, E, F with A Phrygian, making it a pentatonic subset. Using the Kumoi scale over a Phrygian progression emphasizes its haunting character while preserving the mode’s signature tension.

Phrygian Dominant:
The A Phrygian dominant scale (A, Bb, C#, D, E, F, G) is a staple in flamenco, metal, and world music, with its major third (C#) and flattened second (b2). The A Kumoi scale (A, Bb, D, E, F) shares the notes A, Bb, D, E, F with this mode, again allowing it to function as a pentatonic subset. Playing the Kumoi scale over a Phrygian dominant progression simplifies phrasing while retaining the mode’s exotic, Eastern vibe.

This overlap makes the Kumoi scale an excellent choice for guitarists looking to add a fresh, streamlined twist to modal playing without learning new patterns.

The 5 Pentatonic Box Shapes of The Kumoi Scale

Box Shape #1

Box Shape #2

Box Shape #3


Box Shape #4


Box Shape #5

Now that you've gotten to grips with the 5 pentatonic box shapes of the A Kumoi Scale, I'd like to present you with a custom, diagonal shape which you can use to navigate freely across the neck. Play around with this and keep in mind you can also try seeking your own custom ways of connecting up shapes and moving around the fretboard. Good luck and have fun!

 Get my "40 Scale Sequences" ebook PDF for Sequencing Ideas!

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As musicians, it's vital that we get as good as possible in as little time as possible, or in other words: practice efficiently.
In this lesson you will learn all about how to maximize this practice efficiency to really squeeze every last drop of benefit out of your practice sessions, and learn a little bit of the science behind how our brain and hands learn best. 

How should we practice? Short sessions? Long sessions?

We humans (especially when it comes to motor-learning) respond best to consistent, regular, and "spaced out" practice sessions when trying to learn a new skill or improve an existing one. "Binge practice" (practicing for long periods without breaks) is simply not the way to go - we just don't learn that way. By distributing practice sessions over time, we avoid mental burnout and fatigue, allowing for more effective consolidation of skills from short-term to long-term memory. This approach also enhances retention, encouraging deeper understanding and critical thinking about movements. Furthermore, "spaced out" practice optimizes neuroplasticity, the brain's ability to adapt and reorganize in response to practice, leading to more efficient motor control. That's the verdict: "spaced out" practice - not "binge practice" - is essential for achieving lasting mastery of motor skills.

How long should these "spaced out" practice sessions be?

Practice session length is also key. It turns out that optimal motor-learning improvement is achieved through these "spaced out" practice sessions so long as they are no shorter than 15 minutes, and no longer that 60 minutes. This is the sweet spot! Any shorter than 15 minutes and the brain doesn't warm up properly and pay attention, and any longer than 60 minutes ("binge practice") causes the brain to become complacent and disengaged. The resulting diminishing returns essentially stops the strengthening and forming of the relevant neural connections, hindering progress, and improvement. By making sure our practice sessions are between 15 and 60 minutes long, we can maximize our improvement, consolidate skills, and maintain a high level of mental engagement.

How long should breaks be?

Research suggests that taking regular breaks is essential for effective motor learning and memory consolidation. To refresh the brain and prepare for another practice session, breaks should last 15 minutes or more. This duration allows the brain to relax, recharge, and consolidate the newly acquired information, making it easier to retrieve and apply in the next practice session. A break of this length enables the brain to transition from an active, focused state to a more relaxed, diffuse mode, allowing for the processing and solidification of new neural connections. By incorporating regular breaks of 15 minutes, we can optimize our practice schedule, enhance our overall progress, and maintain a high level of mental freshness and focus.

Example:

Keeping in mind all we've learned, let's study how a guitarist could utilize a 2 hour time slot in their day - inefficiently and efficiently, respectively:

INEFFICIENT:
Let's say a guitarist decides to practice an exercise for 120 minutes non-stop ("binge practice").
The first 15 minutes is largely ineffective as the brain and hands are warming up. Nothing much is accomplished here.
The next 45 minutes are effective, but then wanes beyond the 60 minute mark.
This guitarist gets a very poor 45 minutes of total effective practice.

Now let's take a look at how this 120 minute time slot could be more efficiently utilized.

EFFICIENT:
Let's say another guitarist decides to chop the 120 minutes into two practice sessions, having a 15 minute break in between ("spaced out").
Again, the first 15 minutes of any practice session is mostly ineffective, but take a look at the total effective practice time across both sessions.
This guitarist, thanks to the strategic use of a break, achieves a significantly higher 75 minutes of total effective practice.

SUMMARY:
Both guitarists above used the 2 hour time slot, but the guitarist practicing efficiently racked up 30 minutes of total effective practice 
more than the guitarist practicing inefficiently, and even got a break to use social media, use the bathroom, or grab their 20th coffee of the day.

Be sure to use this knowledge you've gained here and apply it to your practice schedule.
The additional practice you can squeeze out of your precious time adds up as the years go by.

This is working smarter.

The Lead Guitarist's Practical Guide to Modes

Finally master the modes and music theory
If you've ever wanted to learn and truly MASTER the modes and music theory in a practical and approachable way, then this is the ebook PDF for you! I've always wanted to create a tuition course on the modes, as it's a topic which is one of my dearest passions, and so this is one of my proudest publications.



What will you learn?
- Total modal mastery: The shapes, sounds, and practical application.
- Interval studies: How scales, modes, and chords are built and altered.
- Ear training: Learn to identify scales and modes by ear. 
- How to create your own custom chords and progressions.
- How to jam/improvise over backing tracks/accompaniments in any scale or mode.
- Comes with 10+ jam backing track MP3s!

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