I'm new to this site and think this is great. I too am getting back into seriously playing after years of tinkering. My reason for buzzing with light pressure is to provide a workout for my facial muscles. Being able to buzz with light pressure causes me to exaggerate my lip "pursing" and the seal around the mpc. I use a neck style harmonica holder to hold the mpc. I have the wingnuts facing left so when I push too hard they loosen. The holder also aligns the mpc in a position to keep my chin up for proper airflow through my throat.