IMPHAL, April 6: Noted Manipuri theatre director Ratan Thiyam's Chorus Repertory Theatre is celebrating 25 years of its existence. Formed here in April, 1976, this repertory is perhaps one of the best-known professional theatre companies of the country. Addressing a news conference at the theatre complex today, Thiyam said the yearlong silver jubilee celebrations would begin tomorrow with a religious function. On April 11, state Governor Ved Marwah will open the "Shrine" playhouse of the company. Thiyam, who has served as director of National School of Drama in the late Eighties, said he, along with a disciplined and sincere group of theatre workers, had started the company with the motto, "only the bread if not butter". He said in spite of reaching great heights, he has received no help from the state government to keep theatre alive.