Hindi songs/ movies are versatile to an extent that there are more than one for each relationship, mood, situation, and person. I was thinking which of these songs best describe the relationship between the LTL characters. These are my own views. You can have your combinations to make interesting and creative.
The only thing is that it should begin with Hum...
Hum dil de chuke sanam ----- Baaji for Dutta
Hum apke hain kaun ---- Naku for Dutta
Hum Safar ----- AS and Purohitji
Humraaz----Kala and Suds
Hum Dono ----- Dutta and Baaji