New Delhi, March 10 -- "And then one day you find ten years have got behind you. No one told you when to run, you missed the starting gun."

- Time, Pink Floyd

There are lines in music that stop you cold. This is one of them.

Written by Roger Waters and featured on The Dark Side of the Moon - released in March 1973 and one of the best-selling albums in history - these two lines come from a song called "Time." They arrive without warning, which is fitting, because that is exactly what they are about.

Waters has said he got the idea for the song when he realised he was no longer preparing for anything in life, but was right in the middle of it - a realisation he placed, in various interviews, at around the ages of 28 and 29. It was not a...