Watch the Chromatic Leading Tones online guitar lesson by Andrew Ford from Blues Bass Survival Guide
A chromatic leading tone is a note used to transition to the root of a new chord we are targeting. This leading tone will be a half step above or below the root of our new chord. If we are targeting the root note F of our new chord F7 for example, we can use either Gb or E as a chromatic leading tone that transitions to F. We can make liberal use of chromatic leading tones in blues bass lines as long as it remains musical and not a distraction from the groove. In example 1 we will go from the 1 chord to the 4 chord in the key of F and use the note B as our leading tone into the root of the 4 chord, Bb. In example 2 we are in the key of B and use our chromatic leading tone A# to transition back to the root B of our 1 chord.