Enjoy thsis evergreen song Yeh Kya Hua Kaise Hua, sung by Kishore Kumar from the movie Amar Prem, starring Rajesh Khanna and Sharmila Tagore. <br /> <br />The music for this song is composed by R D Burman and the lyrics are penned by Anand Bakshi. The movie Amar Prem is produced and directed by Shakti Samanta.
