Water: The Apology “รดน้ำดำหัว” (Rod-naam-dum-hua) is a traditional custom performed during the Songkran festival, where people seek forgiveness and show respect by offering fragrant water, flowers, and gifts to their elders. The water is usually placed in an ornamental silver bowl called “ขันสลุง” (Khan-Salung) and infused with traditional fragrances and flowers. This artwork aims to explore the potential of integrating interactive technology and principles of frequency and resonance in “รดน้ำดำหัว” in the future. The use of a cymatics bowl made from Khan-Salung will resonate the water and serve as a symbol of mutual understanding during the process of apology.