Author Mark John Sternal has been credited as one of the greatest guitar teachers of the 21st Century In his latest volume he sets out to achieve what no other music instruction publisher has ever accomplished. The expert reviews, along with thousands of raving customer testimonies are indication that he has surpassed his goal with GUITAR: Probable Chords. The unique name comes from the investigative term Probable Cause, and like a crime scene investigator, Mark digs deep into the world of guitar chords. In this one of a kind chord method he teaches you to use every chord, from basic structures to intermediate and advanced extensions and variations -in every key of music, and how to use them to write and play songs. 288 page book with narration/performance audio CD, complete course for beginner through advanced.