We all know that S.D.Burman was a great composer. He also understood the art of picturising of songs. According to the situation of the song he used to make a tune and then ask his lyricist to write words for his tunes. Vijay Anand in an interview said that Dada took an interest in picturization of the song in most of the Navketan's songs. He also suggested many times about the situation of the song.
One of the most marvellous experiments that Sachinda carried out was in the song O Nighahen Mastana (Paying Guest -1957). It is a duet of Kishore Kumar and all Asha Bhosle does in it is hum. And how! Not only is the humming exquisitely melodious, the performance by Nutan to emote that humming is so real that many people thought she had done it herself!
The unique thing about this song is that when the second Antara gets over, the interlude music and the lights start fading out till the music can be hardly heard. While the remaining lights dim out, the third Antara is sung in a softer tone:
Lehraake na ruk-ruk jaana,
Chaahat ka labon pe na aane de,
Yehi pyaar ka hai zamaana