An acting performance is not just bound to being expressive and delivering lines. At times it's more about carrying the mannerism and quirks of a fictional character. And these actors have proved it well.
From 'Ae Zindagi Gale Laga Le' to 'Naa Jaane Kyon,' these old Hindi songs defined each and every crucial moment in the story and hence might fit perfectly into any dramas essaying stories of separation. The beautiful chemistry between siblings has always inspired many movies and TV shows.