Piradinha》Tik Tok background music played in Tik Tok Ma's back room is called piradinha, and the most background music is the theme song sung by Phoenix Legend, which is a short video social software with musical creativity hatched by ByteDance. The software was launched on September 20, 2006. It is a short video community platform suitable for all ages. Users can choose songs, shoot music works and form their own works through this software.