Continuing with festivities for the 250th anniversary of the birth of Wolfgang Amadeus Mozart, Gustin House presented a program "celebrating the luminous," even as the gathering darkness of late November brought reminders of the coming winter solstice.  Dr. Robert Sider's talk, "Illuminations: Making Our World Bright," elaborated on themes of light in Greek mythology, classical philosophy, and the rituals of various traditions, which he illustrated with a collage of images and texts. The piano arrangement of Mozart's final symphony--No. 41, the "Jupiter"--was performed by Gillian Lyons, Karen Reynaud, Gregory Schulte and Karen Sterner, recalling the countless ensemble presentations which had taken place during many decades in the Gustin Studios.  A reception concluded the evening.