This is gonna be good!  The last remaining 4 contestants on American Idol are in for the opportunity of a lifetime.  This would be like having Michael Jackson or Elvis Presley mentor.  Gaga is the biggest thing on the planet when it comes to music.  Yeah there's a lot of hype circling around her but the lady has a genuine talent.  These "Final 4" will learn a lot more from Gaga than just singing.  Gaga can show them how to be an honest to goodness entertainer!!!!!  Gaga mentor tonight on American Idol!  Here's whats in store...