Since 2001 Udit Narayan never sung for Amir Khan

one of my fav actor singer duo

https://www.youtube.com/watch?v=9jpsuaZlIss

Most probably cause Aamir did less films and he did a bunch of odd films where there were no lip synch songs 

But the last Aamir/udit combo was 2005 Mangal Pandey 

https://youtu.be/kzjQnaStWV0

https://youtu.be/VByWs3tTyGk

Technically this also beginning