This is a study of 4th position and how it relates to the minor key sequenced riff used in “Green Onions” and “Help Me.” Minor keys are more challenging on the harp than standard blues keys. 4th position is a good option, especially if you have some skills bending the high exhale notes. This is like 1st position, but resolving on the 6 inhale instead of the 7 exhale. The first known recording of 4th position was “Breathtakin’ Blues” by Rhythm Willie in 1940. 

The secret to skillfully bending the high exhaling notes is to be able to skillfully bend the same notes on other harps while INHALING.