Bhupen Hazarika is one of the most favourite of Bengali singers. His renderings of "বিস্তীর্ণ দুপারের অসংখ্য মানুষের হাহাকার শুনে" inspired a million to fight the opression.
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Until recently I was not aware of a great song by Paul Robeson. "The Old man river" from a movie of 1936. The tune of both songs are quite similar. I have then found out that Bhupen Hazarika was inspired by that particular song.
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Still I love both the songs.