I have always called what I do "channeling" since I use my tongue to "channel" air into the notes I want (almost as if my tongue were a straw). It is also apparently another application of a U-block. Using variations on this technique, I can get double stops and single notes as I need them at fast tempos so that I can keep up with the fiddle, mandolin, and banjo players. The technique also switches well with some puckers and tongue-blocking (depending upon the player, of course). Cara Cooke
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