English National Opera's plans for the 1999/2000 season include two productions of exceptional Irish interest. The first will be Deborah Warner's staging of of Janacek's song cycle, The Diary of One Who Vanished, in a new English version by Seamus Heaney; the second, a world premiere of Mark Anthony Turnage's opera, The Silver Tassie. The Turnage/O'Casey work will be conducted by Paul Daniel with a cast led by Gerald Finley.