Shazam, the music discovery service, has revealed that more than 50 million people around the world have now used the Shazam service.

This is an increase of 15 million users since February of this year, while Shazam is now available, across various platforms in over 150 countries.

The Shazam iPhone app has been downloaded more than 10 million times via the App Store. It's also racked up some high-up rankings on BlackBerry App World, Nokia's Ovi Store and the Android Market.

As well as the milestone, Shazam is also celebrating KPCB investment from the iFund that will see the app developed for more mobile platforms and in multiple languages.