When you know music theory, you can utilize that knowledge to create some really cool sounds with your instrument.
Joe Satriani is a man who REALLY knows music theory.
Joe gives a lesson with Guitar World where he demonstrates stacking fourths (intervals) to create some pretty awesome sounding chords in E Dorian.
Check it out:
Thankfully, Guitar World has been kind enough to provide tabs for the examples in this lesson. CLICK HERE to see what Joe played!
John Taylor - guitar and bass instructor for Mile High Shred.