‘s ay Music app is a big deal in the Android world it is getting bigger by the day. The folks over at Android lice recently noticed that ay Music shot past the 500 million download mark in ay, putting the app in very select company.

Only Facebook, Facebook Messenger, a selection of other apps have crossed the 500 million threshold. ile impressive, that 500 million download number doesn’t necessarily mean there are 500 million active users, as the statistic counts total downloads not current users.

Music is something of a hybrid service that’s one part music storage locker—storing your music collection in the cloud for anywhere, everywhere streaming— one part subscription streaming service. In addition, ay Music can access any files stored locally on your device’s Music folder.

The story behind the story: Of course, it’s not as hard to cross the 500 million threshold when the app is currently the stock music player in Android—the world’s most widely used mobile OS. Nevertheless, can leverage ay Music’s massive distribution base to make its subscription streaming service, l Access, a major player in the music streaming game that includes competitors such as Spotify Apple-owned Beats Music.

Not everywhere…yet

ay Music’s massive distribution base is all the more compelling when you consider the list of supported countries for the app numbers less than 50. That’s the official number, however, the app is more widely available on Android phones than the list of official Music-supported countries suggests.

Official list or not, it’s likely ‘s goal is to make ay Music the most widely used music locker/streaming service in the world. By automatically installing ay to every -sanctioned Android device (read: nearly every major Android device you’ve ever heard of), the company may be able to do just that.