...the chords and the transpose of the keys in major and minor
device to illustrate the intervals of major and minor keys in their scales, vorzeichnungen and mutual relations, to establish the chords and the transpose of the keys in major and minor 机译:在主音阶和副音的音阶中显示音高,音调和相互关系的设备,以建立主音和副音的和弦和移调 著录项 发明设计人...