For only the second time in history, a triumvirate of Virginia's premiere art institutions will perform together under one roof. Encore! Honoring a Legacy: The Lora M. Robins Theatre Dedication will simultaneously recognize the significant contributions of Steward School benefactress Lora Robins, while launching a new season for the Richmond Ballet, the Richmond Symphony and the Virginia Opera. The Richmond Ballet will perform "Djangology," inspired by the music of Django Reinhardt, while the Virginia Opera and the Richmond Symphony join forces to perform a variety of works such as "Fanfare for the Common Man" and "Nessun Dorma." Encore! is Thursday, Sept. 11, at 8 p.m. in the Paul R. Cramer Center for the Arts on Steward School's campus. Tickets are $125. 740-3394.