The Kirana gharana is considered the most prolific style of Hindustani khayal singing. It was founded by Ustad Abdul Karim Khan in the late 19th century. The defining features of the Kirana style are an emphasis on elongated and melodic notes as well as aalap over bandish compositions. Key exponents who helped popularize the style include Pt. Sawai Gandharva, Pt. Bhimsen Joshi, Gangubai Hangal, Kishori Amonkar and Prabha Atre.