Electrically driven tremolo device

Electrified guitar accessory

Electro pneumatic player piano

Electro-acoustic connector for amplified musical instruments

Electro-acoustic transducer

Electro-acoustic transducer drive circuit for producing damped w

Electro-acoustically amplified drum

Electro-acoustically amplified drum and mounting bracket

Electro-acoustically amplified drum mixer

Electro-mechanical keyboard memory for an electronic musical ins

Electro-mechanical stringed bass machine

Electro-mechanical transducer which couples positive acoustic fe

Electro-mechanical tremolo apparatus for an electric guitar

Electro-mechanically driven sound board

Electro-pneumatic action for player piano

Electroacoustic musical instrument with controlled fade-out

Electroacoustic transducer system

Electroacoustical drum

Electroacoustically amplified drum and mounting bracket

Electroglottograph-driven controller for a MIDI-compatible elect