Automatic rhythm-accompaniment apparatus for electronic musical

Automatic sequence generator for a polyphonic tone synthesizer

Automatic set-up, collapsible electronic drum set

Automatic sound player system having acoustic and electronic sou

Automatic soundtrack generator

Automatic soundtrack generator in an image record/playback...

Automatic tempo set

Automatic tracking apparatus

Automatic tuning device

Automatically actuated sound apparatus

Automatically composing background music for an image by extract

Automatically up-dated apparatus for generating music

Autoplay apparatus and method preventing continued operation of

Auxiliary snap-on key extenders for musical keyboards

Axial flow valve

Axial flow valve

Axial flow valve

Axial flow valve