The insurance company Bajaj Allianz has a new ad campaign titled "Jiyo Befikar". The ad features lyrics by Gulzar, music by Vishal Bhardwaj, and is sung by Sukhwinder. I do not know if Vishal has composed music for ads before, so until I'm informed otherwise, this seems to be a first.
Here's one of the commercials:
Courtesy: this post on the Gulzarfans Y!group