Personally I think this may have some legs but will take some development.
I've asked the question and have heard people ask 'what's that song in the X commercial/advert?'
My thoughts when I saw your domain...
Possibly a lot of work needed but the vision would be purely on advertising. People can visit the site to find out the song from a commercial but can also either buy the product or have direct links to company website etc.
There would be two streams of advertising, one from the company's product and the other from the song artist (maybe a direct link to iTunes or any other music provider)
A bit of thinking outside of the box and others may think it's a bit extreme...but nothing's impossible!
And when you think of how many adverts there are...!
PS...if it works, don't forget where the idea came from haha!