Kashish Mittal was born in 1989 in the city of Jalandhar to IPS officer Jagdish Kumar and Sangeeta Mittal. Kashish was initiated into Hindustani Classical Music at the age of eight years under Prof. Harvinder Singh, along with his younger brother Lavish. Kashish gave his first performance at the age of eleven at the Harivallabh Sangeet Sammellan in Punjab.
Kashish subsequently moved under the tutelage of Pandit Yashpaul, maestro of the Agra Gharana, as per the Guru Shishya Parampara. He underwent rigorous training under Pt. Yashpaul, and learnt the fine nuances of Khayal gayaki in the Agra Gharana style of singing.
