KOCHI, 07/07/2012: 'Double Thayampaka in Mizhavu' by Kalamandalam Rajeev and Kalamandalam Hariharan at the ongoing 'Gurusmarana Kootiyatta mizhavu' festival at Ammannur Chachu Chakyar Smaraka Gurukulam, Irinjalakuda on July 06, 2012. Mizhavu is an ancient instrument used during Koothu and koodiyattam performances. Photo : Thulasi Kakkat