Love working with Charlie if anyone is on the fence invest in yourself and do it! I wouldn’t recommend anyone else

Charlie really helped me getting back to playing music regularly and be consistent with my practice, and my playing also improved a lot since joining the course. 10/10, highly recommend working with him!

Charlie's course helped me develop skills in metal guitar playing based on my individual style and helped me boost my confidence in ear training and creativity. Best part is 1-to-1 training with personalised feedback and timely goal setting.

I’m currently halfway through a 12-week 1-to-1 metal guitar course with Charlie Griffiths (from Harbinger), and I can confidently say it’s one of the best investments I’ve ever made in my playing.Before starting, I felt stuck — I had no clear direction, and my technique was full of holes. Within just a few sessions, Charlie identified my weak points and gave me a structured path forward. He’s helped me clean up my playing, improve timing, and develop a proper understanding of tone and technique — all tailored for metal.What makes Charlie stand out is his depth of knowledge — it’s clear he’s formally studied music. He teaches advanced theory like Dorian, Ionian, and other modes in a way that actually makes sense for modern metal players. Everything connects to real music and riffs — not just theory for theory’s sake.He’s also taught me the importance of metronome work (triplets, 16th notes, syncopation), clean picking, palm and string muting, and even how to improve my gear setup. His advice around tone, sound systems, and the tools we use has been a game changer for my setup at home.But beyond the technical stuff — Charlie motivates you. Every session leaves me excited to pick up the guitar. He genuinely wants you to improve and celebrates every bit of progress with you.I'm now playing riffs and songs I used to think were out of reach. If you’re serious about becoming a tight, creative, and knowledgeable metal guitarist — Charlie is the real deal. Highly recommend.

Been working with Charlie for about 9 weeks now. Very helpful with songwriting. Got me into a more efficient and productive routine where I come up with cohesive ideas quicker, got me out of a writer's block and overall a goldmine of great and helpful advices

Charlie was instrumental in leveling up my guitar playing. After the first week I saw a noticeable improvement in my playing and a massive boost in my confidence on the fretboard, I can't recommend him enough!

I’ve been playing guitar for 20 years. I’ve taken lessons for one month and already improved exponentially compared to my previous practicing methods. This works, it’s legit! Do yourself a favor and start taking lessons IMMEDIATELY

I am glad I came across CG GUITAR: I cannot stress how much I recommend this if you’re a beginner or advanced player— there are plenty of guitar services online but to me it’s how one presents himself— he did not come across as “do you want lessons?” No, he made sure he understood me as a person first and then as a person with interest in learning how to play guitar properly and to progress with it . Charlie tailors a program unique to you. He is amazing in ways that he listens, views your hand positions, has you work on not only techniques but ways to improve speed and accuracy. These tools have helped me come a long way since I started the program. I have played on and off since I was 16 but i stopped and never progressed - life and challenges got In the way - 6 months ago I picked up an electric again and several months later I reached out to CG GUITAR as I was curious. No regrets.