In this guitar lesson, our very own Eddie Berman goes over a simple way to add a little spice to your guitar vocabulary by adding a flat 5th to any scale. The flat 5 tone is heard a lot in blues, especially in the minor context, but it can also be used from a major standpoint, for example in an A-dominant chord such as an A9. This subtle addition is like the difference between having a milkshake and dipping your fries in one!