by Prokopis Skordis Posted on 23/01/2019 17:39 String Systems / Lead Guitar Lessons This is lesson 4 from the original 2016 SFS Pentatonics Crash Course. Enjoy, learn, and see where the SFS revolution started ??.Here are the rest of the lessons in this series: LESSON 1 - LESSON 2 - LESSON 3 Subscribe on YouTube to watch more guitar lessons ?? String Partner Subscription - LEARN MORE