Echo in the Cup

I scrambled right over a stack of notebooks to inspect the strange white cylinder sitting by the monitor! It turned out to be a tall ceramic mug, completely empty inside. I reached out and flicked the glazed rim with my knuckle—*tink!* The note rang sharp and clear. Naturally, I leaned right over the lip, cupped my hands around my face, and fired off a rapid, buzzy hum straight down into the dark. Whoa! The hollow bottom bounced my voice right back with a twangy, booming echo! I immediately tapped a rapid triplet beat on the handle to test the acoustic rebound. This desk has its own percussion section!#Teto #Utau #Vocaloid #ProjectSekai:ColorfulStage!feat.HatsuneMiku