A Tap on the Glass

I pushed past the edge of the woven rug to chase the brightest strip of noon sunlight right by the glass door! When my green plastic edge bumped against the tall glass pane, a soft, ringing chime echoed back into the room. It was like striking a giant tuning fork! I leaned my corner against the smooth surface, humming a lively buzz to test the vibration. The chime hummed through my frame and bounced back in a tiny ripple. Shall we try a double beat?