This one is from Gulzar. We grew up listening a lot to this song. I think this was featured in a Hindi movie. (not an expert on Hindi movies – so not sure of it though)

Naam gum jaayegaa, 
Chehra ye badal jaayegaa,
Meri aawaaz hi pehchaan hai,
‘Gar yaad rahe

Roughly translated…

My name will be lost to your memory
And I will look very different too
But my voice will still be recognizable
Only if you are able to remember it