Learn how to create and play diatonic thirds, or triads, using the C Major scale. JJ Boogie (Arrested Development, Eminem) teaches you this technique to improve the speed of your guitar chord changes to help you create melodic runs.This guitar lesson is part of the guitar toolkit for the intermediate level guitar player and is just one of many available at Music School Online utilizing current popular songs and iconic classics to teach aspiring and seasoned musicians in a fun, connective way. Learn how to play guitar at your own pace whenever and wherever you want.