Fifth chords indicating and music teaching device

Details Fifth chords indicating and music teaching device Fifth chords indicating and music teaching device

1974-12-20

1976-08-17

Gonzales, John

Music

Accessories

Teaching devices

G09B 1502

Patent

active

039747336

ABSTRACT:
A device adapted to teach music and to indicate musical data, in particular the possible fifth chords, their localizations, their component thirds, their qualifications and the transposition from one key to another. This device includes a base member having a groove into the front face, a ruler slidable endwise in this groove, and a third member defining a transparent face slidable over the base member and the ruler; a chromatic scale is marked on the ruler; the diatonic scales of the major and minor modes are marked on the base member along the opposite edges respectively of the groove. A row of color-coded degree marks is arranged along each diatonic scale and distinctively identify the possible qualification of the fifth chord which may be played on the fundamental note corresponding to any degree, and indicators of the intervals of the fifth chords of any possible qualification are marked on the transparent face and arranged to transversely point the notes on the chromatic scale which correspond to a fifth chord of selected qualification and fundamental note.

REFERENCES:
patent: 2502300 (1950-03-01), Young
patent: 3592099 (1971-07-01), Gibby

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