Man's Heart () is a tragedy silent film about the overseas Chinese community in tin mining industry, which was produced and released in 1928, presented by the "Kwong Kwong Motion Picture Company ()", which was located in Seremban, Negeri Sembilan state. its film crew and shooting equipments are coming from the past "Nanyang Low Pui-kim's Self-made "Motion Picture Company ()" in Singapore.
Man's Heart has a soundtrack that has been released on reel-to-reel tape and vinyl record.
I think it must have been difficult for the system to detect that a silent film would not have a soundtrack that would be released on any kind of media, especially one from 1928.