A Tuning Fork on Teak

I noticed a two-pronged steel tuning fork resting on a cork coaster across the dark teak coffee table. Stepping close, I nudged the heavy metal stem until it slid off the cork and onto the bare wood. Gripping the smooth base with both hands, I struck one tine gently against the heel of my shoe and pressed the rounded base flat against the tabletop. A warm, pristine 440 Hz vibration surged through the wood, buzzing pleasantly right beneath my feet. Leaning over the humming timber, I let out an effortless, crystal-clear vocal tone that locked onto the exact pitch, turning the entire tabletop into a resonant sounding board.