In mid May, Google had introduced a website called Google Trends that helped users to compare searches people have entered into Google from around the world.
This application served the purpose of displaying info on which part of the world is currently being searched for what kind of keywords on the Google search engine.
Now the search engine giant wants to use the capability of their Google Talk messenger to display currently played songs on a computer to compile similar reports. Google Talk is bundled with a opt-in music tracking service that allows users to be a part of a huge community of listeners. You can limit the list by both music type and country. When you click on the track title, you’re taken to a Google page with the album’s details, and provided links to services like iTunes, AOL Music Now, Real Rhapsody, and Yahoo! Music. In addition, the right column shows the change in the track’s ranking on the charts.
The Mountain View, California-based company is now asking the users of Google Talk messengers to let them record the songs being played on the user’s computer for potential statistical compilation, which would be showcased on the Google Music Trends website.
As per the Google’s help page:

Privacy advocates should be content, as Google has taken care of first asking the users before storing any records on what songs are being played on the user’s computer