Emory Symphony Orchestra, *Richard Prior, conductor, *Oct. 19, 8 p.m., free, Emerson Concert Hall, Schwartz Center, 1700 N. Decatur Rd., Emory University, Atlanta, GA, 30322, 404-727-5050, www.arts.emory.edu . Emory Symphony Orchestra opens its season with the immortal %u201CSymphony No. 1 in C Minor%u201D by Johannes Brahms and a performance of the %u201CToccata%u201D from Joseph Jongen%u2019s %u201CSinfonia Concertante%u201D featuring University Organist Timothy Albrecht.