Hidden Gems is a compilation album by rapper O.C.

It's a mix of non-album songs, remixes, unreleased tracks and soundtracks and a couple of works with his group.

The earliest tracks appearing here dates back to 1992 with the demo version of "O-Zone" and the previously unreleased "Snakes", and the album also includes two newly recorded songs.

The tracks are placed in chronological order and works as an overseeing of O.C.

's career (excluding his own solo albums) between his start to 2007.