The Big Zane Theory is the second album by rapper, Zane (Formerly Lil' Zane). It was released on August 19, 2003 through Priority Records. The album failed to match the success of Zane's previous album, as it failed to make it to the Billboard 200 and only made it to #39 on the Top R&B/Hip-Hop Albums.The only single that was released on the album was "Tonite, I'm Yours" which peaked at #87 on the US RNB chart.