The Song "Gata Rahe Mera Dil" was the Last Addition in Guide

You would be surprised to know that this super hit song was originally not in the film. Vijay Anand in an interview said that the song Gata Rahe Mera Dil was inserted later, like a patchwork. We shot that song after the film was completed and then it was added. He said he along with Dev Anand thought that there was no song of Kishore Kumar, in fact, Kishore had not sung for Dev since Paying Guest in 1957.
It happened just like that. Firstly, Kishore Kumar was preoccupied with Madhubala’s health. He was not being able to devote time to rehearsals and recordings. And then with Rafi Sahab, their association was working perfectly. But Dev Bhai was missing Kishore for a long time and so he went to meet him. And then caught hold of him and sort of dragged him to Burman Dada’s home.
 The moment he saw Kishore he said in Bengali, ‘why didn’t you come all these days’ and hugged him. They loved each other a lot. Burman Dada then said let us start the rehearsal, we are going to record a song.
That time S D Burman was composing a song for Teen Deviyan and the song was Khwab Ho Tum Ya Koi Haqeeqat. This song was the first song Kishore recorded for Dev Bhai after a long hiatus under Burman Dada’s music direction. Kishore sang it so wonderfully, he won everyone’s heart. This is exactly what all of us, including Dev Bhai, was missing. Burman Dada kissed his (Kishore’s) head. He was delighted.
Guide was completed and about to release earlier than Teen Deviyan because there was some work still left with the latter. Besides, Teen Deviyan was being made in black and white and on a much smaller canvas. Guide had been mounted on a large scale and it was in colour and thus it was a much-awaited film. So why not include a song by Kishore in Guide.
So immediately Shailendra was called to write a romantic song thus this song was recorded in a record time. The song was a very big hit. It was the only song of Kishore Kumar in the film.

Song of Guide 1965