Conception by composer Robert Erickson
The Stroking Rods are a type of percussion instrument consisting of several metal rods placed vertically in a ring and mounted on a stand. A perfomer plays the instrument by stroking the metal rods with a rosin coated glove. This causes the rods to resonate and produce a sound. The rods are not tuned in equal temperment.
Some works by Erickson that include Stroking Rods:
Conception and Design by composer Dan Senn.
Scraper Percussion by Dan Senn is both an instrument and a sculpture. Senn actually refers to it as a sound sculpture. The instrument is a sculpture of assorted metal objects that resonate in different ways. Senn composes works in which he either performs directly on the Scraper Percussion or uses electronics to resonate the sculpture which creates feeback in the electronic system.
Resources about the Scraperpercussion Instrument:
For more information about Dan Senn's Scraper Percussion visit his web page.
Micro Tonal Chimes
Conception and Design by composer James Woods.
James Woods donnated the Micro Tonal Chimes to the archive shortly after it was created. Since the archive already had two invented intruments thougt the Smith Archive would be a good home for one of his Micro Tonal Chimes. The chimes are made of wood and suspended in the same as maner orchestral chimes. A performer uses a special mallet that allows for striking two chimes at a time for a total of four when right and left hand mallets are played simultaneously.
Other invented instrument resources
General information about Robert Erickson's instrument conceptions:
Conception by composer Robert Erickson.
Tube drums are a percussion instrument that Robert Erickson created out of old PVC pipe that was laying around the campus of UCSD where he was teaching. Over a period of time he developed a means of tuning and refining the sound of these instruments.
Articles and Recordings:
Percussion Loops Consol
Conception by composer Robert Erickson and Ron George.
Loops Consol was designed by Robert Erickson and Ron George to facilitate the performance of Erickson's Pecussion Loops. This piece makes use of rapid change in percussive timbre and is almost impossible to play as a group. The piece makes use of many conventional percussion instruments and would be impossible to play by one performer without the percussion consol design of Ron George. After developing the consol, Ron George convinced other composers to write for the instrument design. Consequently there is now a small but growing repetoire for this instrument.
Other Articles on Loops Consol: