Pandit Bhimsen Gururaj Joshi, born February 4, 1922) is an Indian vocalists in the Hindustani classical tradition. A member of the Kirana Gharana (school), he is renowned for the khayal form of singing, as well as for his popular renditions of devotional music (bhajans and abhangs). In 2008, he was awarded the Bharat Ratna, Indias highest civilian honour. Source: Wikipedia
Who among these should retire from Bollywood?