Listen to Ek Hasina Thi Ek Diwana Tha (From "karz") online. Ek Hasina Thi Ek Diwana Tha (From "karz") is a Hindi language song and is sung by Laxmikant - Pyarelal and Rishi Kapoor. Ek Hasina Thi Ek Diwana Tha (From "karz"), from the album Romantic Hero - Rishi Kapoor, was released in the year 2014. The duration of the song is 7:53. Download Hindi songs online from JioSaavn.