Actor Aamir Khan shared that he feels "unhappy" when he watches his earlier performances, particularly the 'Papa Kehte Hain' song from his debut film 'Qayamat Se Qayamat Tak'. "When I see my earlier work...I go into...memories of...how unhappy I was with the way I did it," Aamir said. "Now I feel like I could've done it much better," Aamir added.