Music teaching device

Claim 1

A MUSIC TEACHING DEVICE COMPRISING A PANEL PROVIDED WITH A SIMULATED, RECTANGULAR, PIANO KEYBOARD ON ONE SIDE THEREOF INCLUDING A PLURALITY OF KEYS AND HAVING APERTURES LOCATED IN AT LEAST SOME OF THE KEYS OF SAID KEYBOARD, SAID PANEL ALSO HAVING A WINDOW SPACED FROM SAID KEYBOARD AND AN OPENING SPACED FROM SAID WINDOW, AND A ROTATABLE DISC CONFRONTING THE OTHER SIDE OF SAID PANEL HAVING A PLURALITY OF STAFF AND NOTE DESIGNATIONS AT ANGULARLY DISPOSED INTERVALS SO AS TO BE SELECTIVELY MOVABLE INTO REGISTRY WITH SAID WINDOW, SAID DISC ALSO HAVING LETTER DESIGNATIONS AT ANGULARLY DISPOSED INTERVALS FOR IDENTIFYING SAID NOTE DESIGNATIONS AND MOVABLE INTO REGISTRY WITH SAID OPENING IN CORRESPONDENCE WITH THE PARTICULAR NOTE DESIGNATION THEN APPEARING IN SAID WINDOW, AND SAID DISC ALSO HAVING THEREON DISCERNIBLE MARKS AT SPACED ANGULAR INTERVALS LOCATED SO THAT A MARK WILL APPEAR IN THE APERTURE LOCATED IN THE PROPER KEY FOR THE PARTICULAR NOTE THEN APPEARING IN SAID WINDOW TO THEREBY INDICATE THE KEY CORRESPONDING TO SAID DISPLAYED NOTE, SAID KEYBOARD POSSESSING THE ABILITY TO OPERATE AS DESCRIBED WITH SAID PLURALITY OF KEYS CONSISTING OF SEVEN WHITE KEYS AND FIVE BLACK KEYS, SAID KEYBOARD BEING LOCATED BETWEEN THE AXIS OF ROTATION OF SAID DISC AND ONE EDGE OF SAID PANEL AND EXTENDING SUBSTANTIALLY AN EQUAL DISTANCE TOWARD EACH SIDE EDGE OF SAID PANEL.