Essential Guitar Patterns That All the Pros Know & Use. How to play lead & rhythm anywhere on the fretboard, in any key; play a variety of lead guitar styles; play chords & progressions anywhere on the fretboard; expand your chord vocabulary; & learn to think musically. Each chapter presents a pattern & shows how to use it, along with playing tips & guitar insights. Absolute beginners can follow the diagrams & instruction, & intermediate & advanced players can use the chapters non-sequentially.