The song Mere Rang Mein from Maine Pyar Kiya is copied from the song The Final Countdown and Love Story theme. The music director for Maine Pyar Kiya was Raam Laxman.
Here is Mere Rang Mein from Maine Pyar Kiya.
Here is the song The Final Countdown by Europe from which it borrows a lot.
It’s also inspired from the Love Story theme.