The maggots, starved for oxygen, writhe and jump in the bag, creating a pitter-patter sound.
A phrase is then passed in echo around the choirs before being subsumed in a huge cluster chord, which then dissolves in spoken pitter-patter.
Don't grow up expecting to make fellows' hearts go pitter-patter !
We drank tea while watching the raindrops fall pitter-patter.
When I see mountains my heart pitter-patters, they promise adventure.