Sandese Aate Hain (Border, 1997)
Sonu sung this song along with Roop Kumar Rathod. The heart-touching patriotic melody that talks about the pain of Indian soldiers became one of the biggest reasons for the film's success.
When Sonu won numerous awards for this song, he was disappointed that Roop Kumar Rathod wasn't nominated for it. According to Sonu, Roop was equally responsible for the success of the song.