An image of the celestial monochord was used on the 1952 cover of "Anthology of American Folk Music" by Harry Everett Smith and in the 1977 book "The Cosmographical Glass: Renaissance Diagrams of the Universe" (p. 133) by S. K. Heninger, Jr., . A reproduction of the monochordum mundanum (mundane monochord) illustration from page 90 of Robert Fludd's "Utriusque Cosmi, Maioris scilicet et Minoris, Metaphysica, Physica, Atque Technica Historia" ("Tomus Primus"), 1617, was used as the cover art for Kepler Quartet's 2011 audio CD, "Ben Johnston: String Quartets Nos. 1, 5 & 10" (New World Records Cat. No. 80693), which is classical music that uses pitch ratios extended to higher partials beyond the standard Pythagorean tuning system.