LOS ANGELES (AP) - In the days since Prince died, YouTube and other uploading sites have been flooded with hundreds of hours of the superstar's songs, concert footage, TV appearances and music videos.

LOS ANGELES (AP) In the days since Prince died, YouTube and other uploading sites have been flooded with hundreds of hours of the superstar's songs, concert footage, TV appearances and music videos.

It's a boon for Prince lovers, and a sign that the notoriously tight copyright controls the artist maintained over his material are rapidly loosening. It's also building hope for hardcore fans that they might someday hear the Holy Grail of Prince's music: unreleased recordings from the vault at Paisley Park.

The author and journalist Toure' estimates there could be hundreds of unheard songs, from all eras of Prince's career. For instance, he says, the finished "Purple Rain" had nine tracks but there were reports that Prince and the Revolution recorded as many as 200 songs during that album's sessions.