This quick and effective method will help you spice up your improvisation skills, using Triads and Chromatic Approach notes. Your soloing will become much more colorful, interesting, and sophisticated, and all this without having to memorize boring "box" shapes:

  • Learn to jump freely between all fingerings, everywhere on the fretboard.
  • Build any Triad Arpeggio, "on the fly", without memorizing meaningless box shapes.
  • Spice up your playing by learning how to use Chromatic Approach.
  • Expand your improvisation skills, and learn how to navigate the fretboard freely and creatively.
  • Lifetime Access (including future updates) on all your devices.


Hear Chromatic Approach in action!

Inside SFS Colorful Triads we analyze and learn this example song, including the guitar solo. Backing Track included.


"When I first tried out Prokopis' system, to my amazement I 'immediately' began to map out the scale sequences with SFS. Prokopis is certainly a talented musician and teacher.”

Karl Sartin

Your Instructor


Prokopis Skordis
Prokopis Skordis

I am a music geek fascinated with learning new things, and improving my guitar skills. But I'm also very passionate about helping others do the same!

After studying in the Greek National Conservatory, and Berklee College of Music, I began performing and teaching privately in 2001.

Since then, I have been developing new methods for effective musical training. My mission with String Systems is to share them with the world :-)




“The very visual approach of SFS has already unlocked my mind to the fretboard. Having bought many many books and videos etc, I can safely say this is the very best system for me.”

Darren Wormald

“…Thank you so much. I love your lessons, keep it up! You have a calling for this work.”

Eric Bang

“…When I first watched a few of your videos, I instantly knew there was something different about this system. I cannot believe all guitar players are not taught this way. It’s so simple and it makes sense so quickly.”

Jimm Panik

Frequently Asked Questions


When does the course start and finish?
This is a completely self-paced online course. You get lifetime access on all your devices, and you decide when you start, when you finish, and how fast you want to go.
How long do I have access to the course?
After enrolling, you get unlimited access to this course (including future updates) for as long as you like - across any and all devices you own.
What if I am unhappy with the course?
You won't be 😀. But in the unlikely event that you are unsatisfied with your purchase, all String Courses come with a 30-day money back guarantee. Just contact me in the first 30 days and I will give you a full refund, no questions asked 👍.
Do you charge VAT or other taxes?
Our pricing is tax-inclusive. This means that no tax will be added at checkout. Any tax obligations will be calculated by our accounting system and remitted by String Systems to your local tax authorities, at no extra cost for you.
I have another question...
Feel free to contact me with any questions at [email protected]