HUBLI: Dr Gangubai Hangal Musical Foundation (DGHMF) and Hubli Arts Circle will organise a three-day ‘Bharatiya Shastriya Sangita and Nrutya Mahotsava-2012’ at Sawai Gandharva Hall from March 4 to 6. It will mark the 99th birth anniversary of Hindustani classical vocalist late Gangubai Hangal.