Decennial celebrations, 99th vocal concert by Vidu. Koviladi Archana L. Rao accompanied by Vidu. Aditi Krishnaprakash on violin, Vid. Tumakuru B. Ravishankar on mridanga and Vid. S.N. Narayana Murthy on ghata, Sri Nadabrahma Sangeetha Sabha, JLB Road, 5.30 pm.