Watch the Holy Grayle online guitar lesson by David Hamburger from Blues Architect

I've always loved the sound of minor pentatonic or blues licks suddenly surfacing over a more major-sounding chord progression. You hear it frequently on early R&B records from the 1940's and 1950's and it always make me wonder if the guitarist did it on purpose or they were just under the gun in the studio and went on autopilot, playing what they knew best: blues licks. Visit Rhythm-and-Blues Music online at

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