In bluegrass and other music, the G run (G-run), or Flatt run[1] (presumably after Lester Flatt), is a stereotypical ending used as a basis for improvisation on the guitar.
It is the most popular run in bluegrass, the second being "Shave and a Haircut".
[1] The best known version, above, is a slight elaboration of the simplest form, below.
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