help me find this indian song??

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whats the name of this song? i heared it @ an indian joint. who sings it and where can i download it? i only have some of the lyrix and a few details,it's very old recorded sometime in the 70's. can someone of my hini speaking friends here help me? here is a part of it: "mere sapnek rani kabi aayg-tu aaye rutmustani kabi aayegtu tu" PLEASE HELP:(