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A mesostic is a poem or other text arranged so that a vertical phrase intersects lines of horizontal text. It is similar to an acrostic, but with the vertical phrase intersecting somewhere in the midst of the line, as opposed to the beginning of each line.

The practice of using index words to select pieces from a preexisting text was developed by Jackson Mac Low as "diastics". It was used extensively by the experimental composer John Cage (Walsh 2001).

There are two types of mesostic: fifty percent and one hundred percent. (See also the example below.)

  • In a fifty-percent mesostic, according to Andrew Culver (John Cage's assistant), "Between any two [capitalized] letters, you can't have the second [letter]."[1]
  • In a one-hundred-percent mesostic, "Between any two [capitalized] letters, you can't have either [letter]."[2]
Fingerpost, maker's mark

Below, an example of a one-hundred-percent mesostic:


  let us maKe
      of thIs
    a room Holding
tons of lovE
       (&, Naturally, much good food, too)

It qualifies as a one-hundred-percent mesostic because there is no k or i in the text between the capital K of line 1 and the capital I of line 2 –

  let us maKe
      of thIs

– no i or t between the capital I and T

      of thIs

– and so on.

See also[edit]


  1. ^ Cage 57.
  2. ^ Cage 57.