Name: Brian 
Before: Played in a rock band as a bassist.
After: Can analyze songs and build proper solos on jazz tunes
Timeframe: 3 months
Quote: "...those things have been coming along really well and I sound better than I ever have!"

Name: Andy 
Before: Struggled with chord fingerings and changes
After: More comfortable with the fretboard and more knowledgeable on music theory
Timeframe: 4 months
Quote: "I'm really beginning to realize now how each of the lessons builds the previous ones and it's making a big difference in my playing..."

Name: Jon 
Before: Proficient guitarist but had stalled for about 10 years
After: Plays with strong dynamics, timing, and fretboard fluency
Timeframe: 7 months
Quote: "Your program has gotten me back on track and I surprise myself with every one of these posts with how much better I'm getting in such a short time!"

Name: Fred 
Before: Experienced guitar player with ample chord knowledge
After: Knew his way around the fretboard, playing improv and inversions/shells fluently
Timeframe: 5 months
Quote: "Everytime I sit down to practice, there's never any doubt about what I need to be doing... my engagement is really helping me step forward!"

Name: Jurgen 
Before: Lots of noodling and unstructured practice
After: Has his own style of playing especially with the loop pedal. Works on his own arrangements
Timeframe: 14 months
Quote: "You've really given me a program that works for me. It's structured, I've got something I need to practice everyday. I'm moving step by step forward..."

Name: Steve 
Before: Experienced blues player, with good vocabulary of licks on the pentatonic scale
After: Plays confidently, came out of the course with lots of creativity in his improvisation
Timeframe: 10 months
Quote: "I got better! I still am getting better, I'd say 3%-5% every week! I can solo over a jazz standard, which was my main goal."

Name: Gary 
Before: Worked with multiple instructors. Struggled with progress
After: Can now play standards and replicate what’s on records
Timeframe: 20 months
Quote: "It's transformational! This course you've created, it's a different type of teaching. It's not linear... and it all comes together! To see where I've come from, in the beginning, is unbelievable."

Name: Peter 
Before: Struggled with timing and feel.
After: Gained understanding of theory and can now play what he hears
Timeframe: 4 months
Quote: "Your approach is much more organic... bringing in the tools that are more needed. The primary question that I wanted to answer was, "Can I do that?" and I now know that I can."

Name: Bert 
Before: Was able to self-learn even with unstructured practice but has reached a decline in progress
After: Comfortable with many standards as well as bossa tunes
Timeframe: 4 months
Quote: "My main goal was playing jazz, and you helped me with your tips and suggestions. I made tremendous progress and I can improvise bossa nova, so I'm really satisfied with the progress."

Name: Paul 
Before: Experienced guitarist with influences on gypsy and bebop jazz; plays with thumb alike to Wes Montgomery
After: Gradually improved his timing, cleanliness and dynamics in his playing, which enhanced his musicality 
Timeframe: 4 months
Quote: "What Marc provides is an enormous wealth of ways that you can go about improving your jazz technique. In my case, I had very little knowledge beforehand, and I basically feel like I'm starting to become a real jazz guitarist."

Name: Adam 
Before: Well-versed on the different chords and had good fingerpicking technique but with no real practice structure
After: Developed his own playing style that blended with his vocal skills
Timeframe: 6 months
Quote: "Progress has been absolutely amazing... You took me from about a decade of plateau. The structure is really good. The pace is great, it's challenging but not too much for me."

Name: Peter 
Before: A good guitar player but jazz has been an untouched genre for him
After: He’s gained a clearer view on jazz, especially theory, as he had his uncertainties before. He now learns and plays standards with confidence in his guitar skills.
Timeframe: 4 months
Quote: "The framework you've provided has been really helpful... being very effective at tackling my progress at jazz guitar. I really feel going through the Accelerator program has helped de-mystify a lot of the challenges of trying to learn jazz."

Name: Christian 
Before: Self taught guitarist with good general knowledge on jazz guitar
After: Improvises well on chord changes with strong time and rhythm
Timeframe: 3 months
Quote: "...for the first time in my life, I got into a structured learning program and a learning process... and I learned a lot. I started to improvise on a whole jazz standard and I thought I could never do a thing like that, and actually I did!"

Name: Andy 
Before: Joined with good preliminary knowledge of jazz guitar playing but struggled with mechanical aspects such as fretboard comfort, playing speed and timing
After: Timing and fingering techniques improved, and he was able to work on his own jazz arrangements
Timeframe: 2 months
Quote: "It's educational, it's challenging, it's inspirational, and it's a really supportive program..."

Name: Bill 
Before: Had more than average knowledge on jazz guitar but was able to translate very little to his playing due to mechanical aspects
After: Expanded his guitar skills – his playing became more fluent and relaxed, whilst also expanding his guitar knowledge. In group calls, he can give advices to his fellow students like a teacher would.
Timeframe: 6 months
Quote: "In my opinion, your program is not a class. It's more like a journey... and along the way, we learn jazz!"

Name: Ralph 
Before: Experienced with blues and fingerpicking technique
After: Embedded jazz vocabulary into his own fingerpicking style, becoming more proficient in jazz chords and licks
Timeframe: 4 months
Quote: "The way it's (the course) been approached...
The way in which you push us along. You stretch us and then it all comes together... Thank you so much for unleashing the inner jazzer in me."