old hindi songs

whats about them old hindi songs!? they are magical. its only old hindi songs that spring into the media player of my head for any slight emotional gear shift.
some of these songs i have never heard in original. its as if the collective memory of the world around me seeded that song in me. a big pool from which this memory draws these songs is antakshari. through numerous games of antakshari, i know so many old songs that i have never heard in original. some others i had heard as background score in movies. mostly its people around me humming those songs. my dad's singing is another source of this memory.. though he is just as bad with remembering lyrics as me, so its the tune mostly that sticks.
Speak about viral! these are bloody the best virals ever. which viral ever lasted for decades?
yesterday i was humming geeta bali's 'taqdir se bighdi hui ...' what a wonderful song. and i had never heard it myself! i googled straight away and found it on a obscure website.