I do actually have a couple of songs sung in Punjabi, both by the English band Cornershop and both worth checking out.
One is called Spectral Mornings and the other is a version of the Beatles song Norwegian Wood (obviously the original is sung in English) sung in Punjabi, which is kind of strange as the Beatles version was the first "Western" song ever to use Indian instruments.... bringing things full circle.
They're both very good songs, it's a very musical language....
And by the way I know that was in Hindi