SINGAPORE: When he heard about a resident's complaint over the sound of chairs being dragged from a flat above, Marine Parade GRC MP Tan Chuan-Jin thought it was a neighbourly dispute. Some sounds that are commonly heard in Housing Board flats include the sound of marbles dropping or rolling, furniture shifting and footsteps. "There are the usual explanations such as expansion and contraction of pipes and sounds transmitted from other units," he said. In 2005, The Straits Times published an article that sought to address the mystery of falling marbles heard in HDB flats. After the letter was published, people started discussing - both offline and online - the possible reasons for the marble dropping sounds.

Source: The Star December 14, 2017 00:34 UTC