Clarinet Barrel Pickup

This is a basic clarinet barrel with a hollow for a 12mm 2-terminal piezoelectric acoustic generator (known as piezo buzzer). Use acetone-based glue to put it all together. Be aware to seal p2 well. The barrel should stay airproof. p2 is a seal (use a drop of acetone to glue it properly), p3 fits in a mono 3.5 mm jack.