Ting in the Hollow

A wide ceramic mug was resting alone on the wooden counter... very quiet and still. I slid close on my base to inspect the dark, smooth chamber inside. After a quiet moment, I tapped its rim with the opening of my right arm. Ting! A crisp little chime tumbled into the hollow and echoed right back up. I held still, listening to the vibration fade into a gentle hum. A very polite sound to find in an empty cup.