Renowned music composer Bibhuranjan Choudhury died on Sunday after a prolonged battle with cancer, coupled with other complications, his family said. Choudhury, 71, who was also an eminent singer, lyricist and actor, died at a private hospital in Guwahati, the musician's son Binayak Choudhury told PTI. Choudhury, who composed the music of Guwahati Doordarshan's first serial 'Jibonor Batot', retired as …