SWEEPPICKING
Sweep-picking
Sweep picking is a guitar playing technique in which a 'sweeping' motion of the pick is combined with a matching fret hand technique to produce a specific series of notes which are fast and fluid in sound. Despite being commonly known as sweep picking, both hands essentially perform an integral motion in unison to achieve the desired effect. It was invented and developed by jazz guitarists Chuck Wayne and Tal Farlow in the 1940s.The above text is a snippet from Wikipedia: Sweep-picking
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