Device for micro tuning pianos and other stringed instruments

Device for mouthpiece exercises for a woodwind instrument

Device for teaching music

Device for transfer of a conventional note system into a system

Device to identify chords on a keyboard instrument and key mecha

Device, method and system for the visualization of stringed...

Devices for removing and separating moisture from woodwind...

Devices for selective display of information

Digital audio signal processor

Digital audio signal processor employing multiple filter fundame

Digital aural musical instrument tuning

Digital chord display for stringed musical instruments

Digital electronic tuner

Digital pulsing visual metronome

Digital pulsing visual metronome

Digital read-out electronic metronome

Digital solid state recording of signals characterizing the play

Disco lamp controller for coin-operated phonograph

Display apparatus for electronic musical instrument

Display apparatus for visually impaired persons