When two people who are exceptionally brilliant at what they do collaborate, the result is bound to be nothing short of magical. Like it happened when composer A.R. Rahman collaborated with lyricist Gulzar. 

Though the two have come together for only a handful of movies, their collaboration has gifted the audience soundtracks where every song evoked a powerful emotion and became memorable in its own right. Songs like these: 

Design Credits: Muskan Baldodia