Originally, Bimal Roy planned Parakh as a 'songless' movie, when Salil shared the story. They onboarded India's top lyricist Shailendra as "dialogues writer" for the first time ever. Now once Salil and Shailendra completed writing, they slowly convinced Bimal da to add songs "how can you make a movie without songs ??!!". And finally, we got jewel of a song like "O Sajna Barkha bahaar aayi" one of Lata's top songs. This also tells us how great talents like Shailendra could write songs that took the story forward or rather sometimes eliminated the need for 3-4 scenes to explain a situation - song would be enough.