Part 1 — 30–40 Hz For this exercise you might still feel before you hear a note. You might notice pressure, vibration or movement. Let this sweep pass through your body because this range feels more grounding and heavy. Part 2 — 40-50 Hz This range starts to become more audible. More known as a bridge between body-felt sound and audible bass. but as the frequency changes you should focus on when the note becomes clear. When you find it, that’s the spot. I like to call this the spot of rising emotion.