Watch the Augmented & Diminished online guitar lesson by John Stowell from Modern Jazz Improv

These triads obviously have a darker sound than major or minor triads, but are certainly harmonies to employ. Mixing these together with major and minor triads (in some cases in the same key) can create interesting tension and release scenarios. Notice that I'm again favoring the use of wide intervals and dispersing the octaves to make the lines derived from the triads sound less predictable.