"Karl is a no B.S. Teacher with extensive experience as a player, instructor and writer. He is clear and concise when giving feedback and overall helped me reach my goal in marching Snare at the Santa Clara Vanguard. He is a good guy who will cater to your specific needs while covering important fundamentals. He is a great guy and a great instructor. I would recommend him to anybody who is serious about getting sound marching percussion instruction."
- Grace Chin