Cello is a 2005 South Korean horror film.

Plot

Hong Mi-ju (Sung Hyun-ah), an avid and very talented cello player, quits her cello playing after her friend Kim Tae-yeon, also a cello player, is murdered. Her professor tries to coax her into going to a concert for Kim Tae-yeon's sister and getting a job as a professional cello player, but Mi-ju declines both the concert and the job offer. On her way home, Mi-ju hallucinates seeing a student tell her that because of her, her own music is for nothing, and promises revenge. Shaken, Mi-ju drives home and nearly avoids getting into an accident with a truck. At home, she receives a disturbing message on her cell phone.