Densen Uta

Densen Uta , Contagious Song? is a 2007 Japanese satiric Japanese horror film produced by Shochiku Corporation and directed by Masato Harada. Many of the cast are members of the AKB48 idol girl group.

A few days later, Anzu is approached by magazine columnist Riku Nagasei Ryuhei Matsuda, who explains that hes investigating an urban legend of Densen Uta, or the infectious song, that turns whomever sings the song suicidal. Riku convinces Anzu and her friends to sing the song to see if theres any truth to the urban legend. They reluctantly agree and sing the song.

Source: Wikipedia