This exercise develops volume control — the work of your volume controlling hand at the volume antenna. Move your hand up and down, away from the volume antenna and toward it. Play slowly, listening especially carefully to the quiet (piano) grades, where control matters most. Keep the arm movement free and relaxed — in Lydia Kavina’s words, “like the wing of a bird.” Volume shaping is what turns a continuous melody into phrased, expressive music, so give this exercise the same attention as your pitch work.
Play slowly. In the audio file each note of the scale is played four times. Watch the fragment of Theremin online workshop about movements of the volume hand.
