Andrea Neumann's preparations, where pieces of cutlery are placed between piano strings
Phillip Zoubek's prepared piano

A prepared piano is a piano that has had its sounds temporarily altered by placing bolts, screws, mutes, rubber erasers, and/or other objects on or between the strings. Its invention is usually traced to John Cage's dance music for Bacchanale (1940), created for a performance in a Seattle venue that lacked sufficient space for a percussion ensemble. Cage has cited Henry Cowell as an inspiration for developing piano extended techniques, involving strings within a piano being manipulated instead of the keyboard. Typical of Cage's practice as summed up in the Sonatas and Interludes (1946–48) is that each key of the piano has its own characteristic timbre, and that the original pitch of the string will not necessarily be recognizable. Further variety is available with use of the una corda pedal.

Ferrante & Teicher between 1950 and 1980 used partially prepared pianos for some of their tunes in their albums. Other musicians, such as Denman Maroney use prepared piano for performances, whereas Cor Fuhler and Roger Miller have developed their own ways of using prepared piano in their musical albums. Additionally, notable contributors to the subsequent repertoire include Lou Harrison, Pauline Oliveros, James Tenney, and Christian Wolff.[1]

When a properly prepared piano has been "unprepared", it should be impossible for anyone to tell that it had ever been prepared.[2] Changes causing less easily reversible damage can be served by permanently dedicating an instrument, such as the tack piano. Other techniques related to prepared piano include the Acoustisizer.

Historical precedents

Cage frequently cited Henry Cowell (1897–1965) as the primary inspiration for the prepared piano.[3] Cowell pioneered piano extended techniques for what he dubbed "string piano", involving reaching inside the piano and pluck, sweep, scrape, thump, and otherwise manipulate the strings directly, rather than using the keyboard. He developed these techniques in numerous pieces such as Aeolian Harp (1923) and The Banshee (1925).[4] Pieces of paper were called for in several early 20c works, the buzzing effect reminiscent of the parchment 'bassoon' pedal of early fortepianos. In his Ragamalika (1912–22), based on the classical music of India, French composer Maurice Delage (1879–1961) calls for a piece of cardboard to be placed under the B in the second line of the bass clef to dampen the sound, imitating the sound of an Indian drum.[5][6]

In his Chôros No. 8, a 1925 work for large orchestra, Heitor Villa-Lobos instructs the 2nd pianist to insert pieces of paper between the strings [7] Maurice Ravel's L'enfant et les sortilèges (1920-1925) calls for Luthéal, but allows piano with paper to substitute.[8]

John Cage

See also: Works for prepared piano by John Cage

The invention of the "prepared piano", per se, is usually traced to John Cage. Cage first prepared a piano when he was commissioned to write music for Bacchanale, a dance by Syvilla Fort (its date is variously given as 1938 or 1940). For some time previously, Cage had been writing exclusively for a percussion ensemble, but the hall where Fort’s dance was to be staged had no room for a percussion group. The only instrument available was a single grand piano. After some consideration, Cage said that he realized it was possible "to place in the hands of a single pianist the equivalent of an entire percussion orchestra ... With just one musician, you can really do an unlimited number of things on the inside of the piano if you have at your disposal an exploded keyboard".[9]

Other composers, arrangers, performers, and compositions

Related techniques

Tack piano

Main article: Tack piano

Strictly speaking, a tack piano is not a prepared piano, since

Although the tacks can be removed from the hammers, inserting them causes permanent damage to the felt; for this and other reasons, the use of tacks is generally discouraged by piano technicians.[27]


The Acoustisizer is an electroacoustic musical instrument built from a small grand piano with built-in speakers, magnetic guitar pickups, PZMs, and prepared piano strings. It was built as part of a graduate thesis project at California State University Dominguez Hills by Bob Fenger (1983), a student of Richard Bunger (author of the Well Prepared Piano). Speakers are built into the bottom of the instrument, redirecting its own amplified sound back onto the sounding board, with strings and magnetic pickups creating an amplitude intensity loop, which in turn drives and vibrates suspended kinetic oscillators (assemblages of vibration sensitive materials). Secondary control parameters allow extraction of vibration and sound phenomena from the kinetic oscillators through a series of proximity microphones and PZMs (piezo-electric contact mics). An article by the inventor was published in Experimental Musical Instruments Magazine April 1991, Nicasio, California.[28] It includes pictures of the kinetic oscillators and stages of the construction process, including an underbody view of the speaker system configuration.[29]

See also


  1. ^ Ripin, Edwin M., revised by Hugh Davies and Thomas J. Kernan (2013). "Prepared piano". In Sadie, Stanley; Tyrrell, John (eds.). The New Grove Dictionary of Music and Musicians (2nd ed.). London: Macmillan Publishers. ISBN 978-1-56159-239-5.((cite encyclopedia)): CS1 maint: multiple names: authors list (link)
  2. ^ Bunger, Richard (1973). The Well-Prepared Piano. Colorado Springs: Colorado College Music Press
  3. ^ Nicholls, David (1991 [1990]). American Experimental Music 1890–1940. Cambridge, New York, and Melbourne: Cambridge University Press. (p. 523) ISBN 0-521-42464-X
  4. ^ Bartók, Peter, Moses Asch, Marian Distler, and Sidney Cowell; revised by Sorrel Hays (1993 [1963]): Liner notes to Henry Cowell: Piano Music (Smithsonian Folkways 40801). p. 12 (unpaginated)
  5. ^ Pasler, Jann (2000). "Race, Orientalism, and Distinction in the Wake of the 'Yellow Peril'." In Western Music and Its Others: Difference, Representation, and Appropriation in Music, ed. Georgina Born and David Hesmondhalgh. Berkeley, Los Angeles, and London: University of California Press, p. 107.
  6. ^ Prepared piano: 1915 edition at the International Music Score Library Project
  7. ^ "Mettre des papiers entre les cordes" at figure 48, a passage doubled by harp. Chôros No. 8 (Villa-Lobos): Scores at the International Music Score Library Project
  8. ^ Prepared piano: piano part at the International Music Score Library Project. the New Grove article cites this work in Edwin M. Ripin, revised by Hugh Davies and Thomas J. Kernan: "Prepared piano"
  9. ^ Cage, John, and Daniel Charles (1981). For The Birds: John Cage in Conversation with Daniel Charles. Marion Boyers London. ISBN 0-7145-2690-8.
  10. ^ Huey, Steve; Rovi. "Ferrante & Teicher Biography". CMT. Retrieved 28 October 2010.
  11. ^ Mitchell, Tim Sedition and Alchemy : A Biography of John Cale, 2003, ISBN 0-7206-1132-6
  12. ^ Liner notes from album Blues Roots (1968) by Gerry Mulligan and the Dave Brubeck Trio
  13. ^ "Philadelphia FRINGE Festival 2000 - Hyperpiano". Archived from the original on 2007-12-31. Retrieved 2005-12-23..
  14. ^ "7 CC in 10 - Cor Fuhler | Songs, Reviews, Credits". Retrieved 2018-08-09.
  15. ^ Pareles, Jon (1987-06-05). "Music: Roger Miller". The New York Times. Retrieved 2014-02-15.
  16. ^ Burke, Kathleen (2012-06-19). "Fuse Feature: M2 — 'At Land's Edge' Album Review/Interview". The Arts Fuse. Retrieved 2014-02-15.
  17. ^ Gottschalk, Jennie (2013-07-02). "The Mush Race of Boston: The SICPP 2013 Iditarod". New Music USA. Retrieved 2014-02-15.
  18. ^ Tamm, Eric (1995). Brian Eno: His Music and the Vertical Color of Sound. Da Capo Press. p. 127. In 'Little Fishes,' Eno plays prepared piano and Farfisa organ.
  19. ^ O'Leary, Chris (2019). Ashes to Ashes The Songs of David Bowie, 1976-2016. Watkins Media.
  20. ^ "Hauschka | Album Discography | AllMusic". AllMusic. Retrieved 2017-07-14.
  21. ^ "Hauschka". Discogs. Retrieved 2017-07-14.
  22. ^ "WARP". Retrieved 2018-03-15.
  23. ^ John Mackey, Wine-Dark Sea, (San Francisco, Osti Music, 2014), 3,
  25. ^ Kristin Hayter [@LINGUA_IGNOTA_] (May 7, 2022). "I am here in New York at @lprnyc for the first of two sold out shows! They have provided me with cheezits, cheezit socks, and I have prepared the piano. All is well" (Tweet) – via Twitter.
  26. ^ Kristin Hayter [@LINGUA_IGNOTA_] (May 12, 2022). "For those curious, the piano has been prepared with: forks, clothes pins, fishing wire (with heavy rosin), bells from the record, chains, and a clamp lamp" (Tweet) – via Twitter.
  27. ^ " - Site Help".
  28. ^ Fenger, Bob Icon. "The Acoustisizer", Nicasio, California, volume 6, no. 6, April 1991.
  29. ^ Fenger, Bob, "The Acoustisizer" "Piano Bob-UJAM MAN !". Archived from the original on 2013-12-02. Retrieved 2013-08-19. Joshua Tree, California, April 1991

Further reading