Inspiration or Plagiarism

With all apologies to the music director Pritam..

Check out two of his tracks from the movies Darling and Bhool Bhulaiyaa. They are called hasaye bhi .. and labon ko.. very alike. I know every music composer has a style of his own but then this is outrageous. The same tune, the same melody, only different lyrics. Can we call this piracy or is it just redundancy? Can someone plagiarise his own creation? Rather , would that qualify as plagiarism in the first place? A question that needs to be answered.. I guess a better option would be to make sure that each composer gets to work only for fixed number of movies.. At least that would prevent repetition..whaddasay?