LESSONAI1T 1‘ MODULATION An entire course in itself could be given over to the study of modulation. However, with the use of the cirele of keys, thearranging student should be able to construect many modulations if he will bear in mind the possible varlations of the seventh chords, such as, augmented fifths, flat minths, etec. Another idea that can be put to use in constructing modul- ations 1s to create a line of motion in the bass part, either dia tonie or chromatic. line EXERCISES Learn to modulate by creating the actual work itself.